Concentric castle

Last updated
Krak des Chevaliers (Syria), the best preserved of the concentric crusader castles Xu Li Ya Qi Shi Bao 8721.jpg
Krak des Chevaliers (Syria), the best preserved of the concentric crusader castles
Plan of Belvoir Castle (Israel) Belvoir plan 0.PNG
Plan of Belvoir Castle (Israel)

A concentric castle is a castle with two or more concentric curtain walls, such that the outer wall is lower than the inner and can be defended from it. [1] The layout was square (at Belvoir and Beaumaris) where the terrain permitted, or an irregular polygon (at Krak and Margat) where curtain walls of a spur castle followed the contours of a hill.

Contents

Concentric castles resemble one castle nested inside the other, thus creating an inner and outer ward. They are typically built without a central free-standing keep. Where the castle includes a particularly strong tower (donjon), such as at Krak or Margat, it projects from the inner enceinte.

Development

Star-shaped plan of the citadel of Lille (France), designed by Vauban Grondplan citadel Lille.JPG
Star-shaped plan of the citadel of Lille (France), designed by Vauban
Plan of Beaumaris Castle (Wales) Beaumaris plan, Cadw.jpg
Plan of Beaumaris Castle (Wales)

Surrounding fortresses or towns with a series of defensive walls where the outer walls are lower than the inner walls is something that has been found in fortifications going back thousands of years to cultures like the Assyrians, Persians, Ancient Egyptians and Babylonians. The ancient city of Lachish, a place in Israel, was excavated and found to consist of multiple walls that were illustrated in Assyrian art documenting their successful siege of the city. The Byzantines also famously constructed the Walls of Constantinople, which featured double layers of walls through most of its perimeter and a moat. The city of ancient Babylon also featured multiple layers of fortifications, famously seen in the Ishtar Gate. However, the relationship of the concentric castle to other forms of fortification is complex. An example of an early concentric castle is the Byzantine castle of Korykos in Turkey, built in the early 11th century AD. [2]

Historians (in particular Hugh Kennedy) have argued that the concentric defence arose as a response to advances in siege technology in the crusader states from the 12th to the 13th century. The outer wall protected the inner one from siege engines, while the inner wall and the projecting towers provided flanking fire from crossbows. Also, the strong towers may have served as platforms for trebuchets for shooting back at the besiegers. The walls typically include towers, arrowslits, and wall-head defences such as crenellation and, in more advanced cases, machicolations, all aimed at an active style of defence. [1] The Krak des Chevaliers in Syria is the best-preserved of the concentric crusader castles. By contrast, Château Pèlerin was not a concentric castle, as the side facing the sea did not require defensive walls. However, the two walls facing the land are built on the same defensive principles as other crusader castles in the same period, rivalling the defences at Krak.

While a concentric castle has double walls and towers on all sides, the defences need not be uniform in all directions. There can still be a concentration of defences at a vulnerable point. At Krak des Chevaliers, this is the case at the southern side, where the terrain permits an attacker to deploy siege engines. Also, the gate and posterns are typically strengthened using a bent entrance or flanking towers.

Concentric castles were expensive to build, so that only the powerful military orders, the Hospitallers and Templars, or powerful kings could afford to build and maintain them. It has also been pointed out that the concentric layout suited the requirements of military orders such as the Hospitallers in resembling a monastery and housing a large garrison. Such castles were beyond the means of feudal barons. Thus, concentric castles coexisted with simpler enclosure castles and tower keeps even in the crusader states. [3]

Concentric castles appeared in Europe in the 13th century, with the castles built in Wales by Edward I providing some outstanding examples, in particular Beaumaris Castle, a "perfect concentric castle", [4] albeit unfinished. As Beaumaris was built on flat terrain rather than a spur, it was both necessary and possible to build walls and towers facing in all directions, giving a very regular, almost square, floor plan to the castle. Some influence from crusader fortification has been conjectured, but the amount of technology transfer from the East and much earlier Byzantine examples remains controversial among historians. [1]

Similar structures

In the German-speaking states of the Holy Roman Empire, many castles had double curtain walls with a narrow ward between them, referred to as a Zwinger . These were added at vulnerable points like the gate but were rarely as fully developed as in the concentric castles in Wales or the Crusader castles.

The principle of an outer and inner wall was also used in fortified cities, such as the Theodosian Walls of Constantinople and the city wall of Carcassonne.

The concept of mutually reinforcing lines of defence with flanking fire was continued in later periods, such as the early modern fortifications of Vauban, where outer defence works were protected and overlooked by others and their capture did not destroy the integrity of the inner Citadel.

Citadels from before and during the Reconquista in Spain and Portugal also have fortifications similar to concentric castles found elsewhere in Europe. Castle of Almodóvar del Río is a good example of such a fortress along with Saint George Castle in Lisbon Portugal.

Examples of concentric castles

See also

Related Research Articles

<span class="mw-page-title-main">Castle</span> Fortified residential structure of medieval Europe

A castle is a type of fortified structure built during the Middle Ages predominantly by the nobility or royalty and by military orders. Scholars usually consider a castle to be the private fortified residence of a lord or noble. This is distinct from a mansion, palace, and villa, whose main purpose was exclusively for pleasance and are not primarily fortresses but may be fortified. Use of the term has varied over time and, sometimes, has also been applied to structures such as hill forts and 19th- and 20th-century homes built to resemble castles. Over the Middle Ages, when genuine castles were built, they took on a great many forms with many different features, although some, such as curtain walls, arrowslits, and portcullises, were commonplace.

<span class="mw-page-title-main">Defensive wall</span> Fortification used to protect an area from potential aggressors

A defensive wall is a fortification usually used to protect a city, town or other settlement from potential aggressors. The walls can range from simple palisades or earthworks to extensive military fortifications such as curtain walls with towers, bastions and gates for access to the city. From ancient to modern times, they were used to enclose settlements. Generally, these are referred to as city walls or town walls, although there were also walls, such as the Great Wall of China, Walls of Benin, Hadrian's Wall, Anastasian Wall, and the Atlantic Wall, which extended far beyond the borders of a city and were used to enclose regions or mark territorial boundaries. In mountainous terrain, defensive walls such as letzis were used in combination with castles to seal valleys from potential attack. Beyond their defensive utility, many walls also had important symbolic functions – representing the status and independence of the communities they embraced.

<span class="mw-page-title-main">Beaumaris Castle</span> Castle in Beaumaris, Anglesey, Wales

Beaumaris Castle, in Beaumaris, Anglesey, Wales, was built as part of Edward I's campaign to conquer north Wales after 1282. Plans were probably first made to construct the castle in 1284, but this was delayed due to lack of funds and work only began in 1295 following the Madog ap Llywelyn uprising. A substantial workforce was employed in the initial years under the direction of James of St George. Edward's invasion of Scotland soon diverted funding from the project, however, and work stopped, only recommencing after an invasion scare in 1306. When work finally ceased around 1330 a total of £15,000 had been spent, a huge sum for the period, but the castle remained incomplete.

<span class="mw-page-title-main">Harlech Castle</span> Castle in Harlech, Gwynedd, Wales

Harlech Castle in Harlech, Gwynedd, Wales, is a Grade I listed medieval fortification built onto a rocky knoll close to the Irish Sea. It was built by Edward I during his invasion of Wales between 1282 and 1289 at the relatively modest cost of £8,190. Over the next few centuries, the castle played an important part in several wars, withstanding the siege of Madog ap Llywelyn between 1294 and 1295, but falling to Prince Owain Glyndŵr in 1404. It then became Glyndŵr's residence and military headquarters for the remainder of the uprising until being recaptured by English forces in 1409. During the 15th century Wars of the Roses, Harlech was held by the Lancastrians for seven years, before Yorkist troops forced its surrender in 1468, a siege memorialised in the song "Men of Harlech". Following the outbreak of the English Civil War in 1642, the castle was held by forces loyal to Charles I, holding out until 1647 when it became the last fortification to surrender to the Parliamentary armies. In the 21st century the ruined castle is managed by Cadw, the Welsh Government's historic environment service, as a tourist attraction.

<span class="mw-page-title-main">Fortification</span> Military defensive construction

A fortification is a military construction designed for the defense of territories in warfare, and is used to establish rule in a region during peacetime. The term is derived from Latin fortis ("strong") and facere.

<span class="mw-page-title-main">Krak des Chevaliers</span> Crusader castle near Homs, Syria

Krak des Chevaliers is a medieval castle in Syria and one of the most important preserved medieval castles in the world. The site was first inhabited in the 11th century by Kurdish troops garrisoned there by the Mirdasids. In 1142 it was given by Raymond II, Count of Tripoli, to the order of the Knights Hospitaller. It remained occupied by them until it was reconquered by the Muslims in 1271.

<span class="mw-page-title-main">Margat</span> Historic castle in Syria

Margat, also known as Marqab, is a castle near Baniyas, Syria, which was a Crusader fortress and one of the major strongholds of the Knights Hospitaller. It is located around 2 kilometres (1.2 mi) from the Mediterranean coast and approximately 6 kilometres (3.7 mi) south of Baniyas. The castle remained in a poor state of preservation until 2007 when some reconstruction and renovation began.

<span class="mw-page-title-main">Château Gaillard</span> French medieval castle in Les Andelys, Normandy

Château Gaillard is a medieval castle ruin overlooking the River Seine above the commune of Les Andelys, in the French department of Eure, in Normandy. It is located some 95 kilometres (59 mi) north-west of Paris and 40 kilometres (25 mi) from Rouen. Construction began in 1196 under the auspices of Richard the Lionheart, who was simultaneously King of England and feudal Duke of Normandy. The castle was expensive to build, but the majority of the work was done in an unusually short period of time. It took just two years and, at the same time, the town of Petit Andely was constructed. Château Gaillard has a complex and advanced design, and uses early principles of concentric fortification; it was also one of the earliest European castles to use machicolations. The castle consists of three enclosures separated by dry moats, with a keep in the inner enclosure.

<span class="mw-page-title-main">Belvoir Castle (Israel)</span> Crusader castle in northern Israel

Belvoir Castle, also called Coquet by the Crusaders, also Kochav HaYarden and Kawkab al-Hawa, is a Crusader castle in northern Israel, on a hill on the eastern edge of the Issachar Plateau, on the edge of Lower Galilee 20 kilometres (12 mi) south of the Sea of Galilee. Gilbert of Assailly, Grand Master of the Knights Hospitaller, began construction of the castle in 1168. The castle ruin is located in Belvoir National Park, officially Kochav HaYarden National Park. It is the best-preserved Crusader castle in Israel.

<span class="mw-page-title-main">Neuf-Brisach</span> Commune in Grand Est, France

Neuf-Brisach is a fortified town and commune of the department of Haut-Rhin in the French region of Alsace. The fortified town was intended to guard the border between France and the Holy Roman Empire and, subsequently, the German states. It was built after the Treaty of Ryswick in 1697 that resulted in France losing the town of Breisach, on the opposite bank of the Rhine. The town's name means New Breisach.

<span class="mw-page-title-main">Kerak Castle</span> Fortified residence in al-Karak, Jordan

Kerak Castle is a large medieval castle located in al-Karak, Jordan. It is one of the largest castles in the Levant. Construction began in the 1140s, under Pagan and Fulk, King of Jerusalem. The Crusaders called it Crac des Moabites or "Karak in Moab", as it is referred to in history books. It was also colloquially referred to as Krak of the Desert.

<span class="mw-page-title-main">Rhuddlan Castle</span> Norman Welsh castle in ruins

Rhuddlan Castle is a castle located in Rhuddlan, Denbighshire, Wales. It was erected by Edward I in 1277, following the First Welsh War.

<span class="mw-page-title-main">Sahyun Castle</span> Medieval castle in northwestern Syria

Sahyun Castle, also known as the Castle of Saladin, is a medieval castle in northwestern Syria. It is located 7 km east of Al-Haffah town and 30 km east of the city of Latakia, in high mountainous terrain on a ridge between two deep ravines and surrounded by forest, the site has been fortified since at least the mid 10th century. In 975 the Byzantine Emperor John I Tzimiskes captured the site and it remained under Byzantine control until around 1108. Early in the 12th century the Franks assumed control of the site and it was part of the newly formed Crusader state of the Principality of Antioch. The Crusaders undertook an extensive building programme, giving the castle much of its current appearance. In 1188 it fell to the forces of Saladin after a three-day siege. The castle was again besieged in 1287, this time both defender and belligerent were Mamluks. In 2006, the castles of Qal'at Salah El-Din and Krak des Chevaliers were recognised as a World Heritage Site by UNESCO. The site is owned by the Syrian government.

<span class="mw-page-title-main">Castles and Town Walls of King Edward in Gwynedd</span> World Heritage Site in the United Kingdom

The Castles and Town Walls of King Edward in Gwynedd is a UNESCO-designated World Heritage Site located in Gwynedd, Wales. It includes the castles of Beaumaris and Harlech and the castles and town walls of Caernarfon and Conwy. UNESCO considers the sites to be the "finest examples of late 13th century and early 14th century military architecture in Europe".

<i>Castle</i> (Macaulay book) 1977 nonfiction book by David Macaulay

Castle is a Caldecott Honor award-winning book written and illustrated by David Macaulay published in 1977. The book offers a detailed illustrated description of Aberwyvern castle, a fictional castle built between 1283 and 1288. Like many of Macaulay's other works, it consists of a written description of the construction process accompanied by pen-and-ink drawings. A great deal of detail is put into the descriptions, and he describes the workers and tools that would have been needed for the construction of a medieval castle.

<span class="mw-page-title-main">Spur castle</span> Castle on a spur

A spur castle is a type of medieval fortification that is sited on a spur of a hill or mountain for defensive purposes. Ideally, it would be protected on three sides by steep hillsides; the only vulnerable side being that where the spur joins the hill from which it projects. By contrast, a ridge castle is only protected by steep terrain on two sides.

<span class="mw-page-title-main">Bailey (castle)</span> Fortified yard in a medieval castle

A bailey or ward in a fortification is a leveled courtyard, typically enclosed by a curtain wall. In particular, a medieval type of European castle is known as a motte-and-bailey. Castles and fortifications may have more than one bailey, and the enclosure wall building material may have been at first in wood, and later transitioned to stone. Their layout depends both on the local topography and the level of fortification technology employed, ranging from simple enclosures to elaborate concentric defences. In addition to the gradual evolution of more complex fortification plans, there are also significant differences in regional traditions of military architecture regarding subdivisions into baileys.

<span class="mw-page-title-main">Fortified tower</span> Defensive structure used in fortifications

A fortified tower is one of the defensive structures used in fortifications, such as castles, along with defensive walls such as curtain walls. Castle towers can have a variety of different shapes and fulfil different functions.

<span class="mw-page-title-main">Ajloun Castle</span> Fortified building in Jordan

Ajloun Castle, medieval name Qalʻat ar-Rabad, is a 12th-century Muslim castle situated in northwestern Jordan. It is placed on a hilltop belonging to the Mount Ajloun district, also known as Jabal Auf after a Bedouin tribe which had captured the area in the 12th century. From its high ground the castle was guarding three wadis which descend towards the Jordan Valley. It was built by the Ayyubids in the 12th century and enlarged by the Mamluks in the 13th.

<span class="mw-page-title-main">Zwinger</span> Area between main and secondary walls of a fortification

A Zwinger is an open kill zone area between two defensive walls that is used for defensive purposes. Zwingers were built in the medieval and early modern periods to improve the defence of castles and town walls. The term is usually left untranslated, but is sometimes rendered as "outer courtyard", presumably referring to the subsequent role of a Zwinger as a castle's defences became redundant and it was converted into a palace or schloss; however, this belies its original purpose as a form of killing ground for the defence. The word is linked with zwingen, "to force", perhaps because the Zwinger forced an enemy to negotiate it before assaulting the main defensive line. Essenwein states that the "main purpose of this feature was so that the besieging force could not reach the actual castle wall very easily with battering rams or belfries, but had to stop at the lower, outer wall; also that two ranks of archers, behind and above one another, could fire upon the approaching enemy".

References

  1. 1 2 3 Kennedy, Hugh (2000). Crusader Castles. Cambridge University Press. ISBN   0-521-79913-9.
  2. Foss, Clive (1986). Byzantine fortifications an introduction. Univ. of South Africa. ISBN   0869813218. OCLC   254999395.
  3. Nicolle, David (2008). Crusader Castles in the Holy Land: An Illustrated History of the Crusader Fortifications of the Middle East and Mediterranean. ISBN   978-1846033490.
  4. Reginald Allen Brown (1989). Castles from the air. Cambridge University Press. ISBN   978-0-521-32932-3.