A fortification is a military construction or building designed for the defense of territories in warfare, and is also used to establish rule in a region during peacetime. The term is derived from Latin fortis ("strong") and facere.
A bastion or bulwark is a structure projecting outward from the curtain wall of a fortification, most commonly angular in shape and positioned at the corners of the fort. The fully developed bastion consists of two faces and two flanks, with fire from the flanks being able to protect the curtain wall and the adjacent bastions. Compared with the medieval fortifications they replaced, bastion fortifications offered a greater degree of passive resistance and more scope for ranged defence in the age of gunpowder artillery. As military architecture, the bastion is one element in the style of fortification dominant from the mid 16th to mid 19th centuries.
A blockhouse is a small fortification, usually consisting of one or more rooms with loopholes, allowing its defenders to fire in various directions. It usually refers to an isolated fort in the form of a single building, serving as a defensive strong point against any enemy that does not possess siege equipment or, in modern times, artillery, air force and cruise missiles. A fortification intended to resist these weapons is more likely to qualify as a fortress or a redoubt, or in modern times, be an underground bunker. However, a blockhouse may also refer to a room within a larger fortification, usually a battery or redoubt.
Visegrád is a small castle town in Pest County, Hungary. It is north of Budapest on the right bank of the Danube in the Danube Bend. It had a population of 1,864 in 2010. Visegrád is famous for the remains of the Early Renaissance summer palace of King Matthias Corvinus of Hungary and the medieval citadel.
A bay window is a window space projecting outward from the main walls of a building and forming a bay in a room.
A caponier is a type of defensive structure in a fortification. The word originates from the French caponnière, meaning "chicken coop".
A sally port is a secure, controlled entry way to an enclosure, e.g., a fortification or prison. The entrance is usually protected by some means, such as a fixed wall on the outside, parallel to the door, which must be circumvented to enter and prevents direct enemy fire from a distance. It may include two sets of doors that can be barred independently to further delay enemy penetration.
A bastion fort or trace italienne, is a fortification in a style that evolved during the early modern period of gunpowder when the cannon came to dominate the battlefield. It was first seen in the mid-fifteenth century in Italy. Some types, especially when combined with ravelins and other outworks, resembled the related star fort of the same era.
Enceinte is a French term denoting the "main defensive enclosure of a fortification". For a castle this is the main defensive line of wall towers and curtain walls enclosing the position. For a settlement it would be the main town wall with its associated gatehouses and towers and walls.
The Château d'Harcourt, situated in the commune of Harcourt in the Eure département of France, is a masterpiece of medieval architecture. The cradle of the Harcourt family, the castle is one of the best preserved castles in the country and contains the oldest arboretum in France.
Santa Maria delle Grazie Tower, also known as Delle Grazie Tower, Madonna delle Gratie Tower or Blata Bajda Tower, was a watchtower in what is now Xgħajra, Malta. It was constructed in 1620, and was the last of six Wignacourt towers to be built. The tower was demolished in the late 19th century by the British military.
A ditch in military engineering is an obstacle, designed to slow down or break up an attacking force, while a trench is intended to provide cover to the defenders. In military fortifications the side of a ditch farthest from the enemy and closest to the next line of defence is known as the scarp while the side of a ditch closest to the enemy is known as the counterscarp.
The fortifications of the town of Rhodes are shaped like a defensive crescent around the medieval town and consist mostly in a modern fortification composed of a huge wall made of an embankment encased in stone, equipped with scarp, bastions, moat, counterscarp and glacis. The portion of fortifications facing the harbour is instead composed of a crenellated wall. On the moles towers and defensive forts are found.
The New Fortress of Corfu is a Venetian fortress built on the hill of St. Mark in Corfu in stages. The original architect of the fort was the military engineer Ferrante Vitelli. The current buildings which exist within the fortress were built by the British during their rule of the island (1815–63).
Fort Tigné is a polygonal fort in Tigné Point, Sliema, Malta. It was built by the Order of Saint John between 1793 and 1795 to protect the entrance to Marsamxett Harbour, and it is one of the oldest polygonal forts in the world. The fort was extensively altered by the British in the 19th century, and it remained in use by the military until 1979.
The fortifications of Malta consist of a number of walled cities, citadels, forts, towers, batteries, redoubts, entrenchments and pillboxes. The fortifications were built over thousands of years, from around 1450 BC to the mid-20th century, and they are a result of the Maltese islands' strategic position and natural harbours, which have made them very desirable for various powers.
Ximenes Redoubt is a redoubt in Salina Bay, Naxxar, Malta. It was built by the Order of Saint John in 1715-1716 as one of a series of coastal fortifications around the Maltese Islands, and it was originally called Salina Right Redoubt. Two warehouses were grafted on the redoubt in the second half of the 18th century so as to store salt from nearby salt pans. It was eventually renamed after Grand Master Francisco Ximenes de Texada, whose coat of arms can be seen on one of the warehouses. The redoubt and warehouses have been recently restored.
In military architecture, a covertway or covered way is a path on top of the counterscarp of a fortification. It is protected by an embankment which is made up by the crest of the glacis. It is able to give the fort's garrison a position beyond the ditch, as well as a continuous line of communication around the outworks.
The Castle of Senhora da Luz is a former-medieval castle/fort in the civil parish of Luz, municipality of Lagos in the Portuguese Algarve, classified as a Property of Public Interest.
A polygonal fort is a type of fortification originating in France in the late 18th century and fully developed in Germany in the first half of the 19th century. Unlike earlier forts, polygonal forts had no bastions, which had proved to be vulnerable. As part of ring fortresses, polygonal forts were generally arranged in a ring around the place they were intended to protect, so that each fort could support its neighbours. The concept of the polygonal fort proved to be adaptable to improvements in the artillery which might be used against them, and they continued to be built and rebuilt well into the 20th century.
