The Fortress of Louisbourg is a National Historic Site and the location of a one-quarter partial reconstruction of an 18th-century French fortress at Louisbourg on Cape Breton Island, Nova Scotia. Its two sieges, especially that of 1758, were turning points in the Anglo-French struggle for what today is Canada.
Harwich Redoubt is a circular fort built in 1808 to defend the port of Harwich, Essex from Napoleonic invasion. The Harwich Society opens it to the public.
Barbettes are several types of gun emplacement in terrestrial fortifications or on naval ships.
A casemate is a fortified gun emplacement or armored structure from which guns are fired, in a fortification, warship, or armoured fighting vehicle. Originally, the term referred to a vaulted chamber in a fort, which may have been used for storage, accommodation, or artillery which could fire through an opening or embrasure. Although the outward faces of brick or masonry casemates proved vulnerable to advances in artillery performance, the invention of reinforced concrete allowed newer designs to be produced well into the 20th century. With the introduction of ironclad warships, the definition was widened to include a protected space for guns in a ship, either within the hull or in the lower part of the superstructure. Although the main armament of ships quickly began to be mounted in revolving gun turrets, secondary batteries continued to be mounted in casemates; however several disadvantages eventually also led to their replacement by turrets. In tanks that do not have a turret for the main gun, the structure that accommodates the gun is also called a casemate.
The Ram Fortress is a 15th century fort situated on a steep slope on the right bank of the Danube, in the village of Ram, municipality of Veliko Gradište, eastern Serbia. The fortress is located on a rock, which is from the northeast side tilted towards the Danube. It is assumed that the city was built on the opposite side from Haram fortress, which was located across the Danube and left no remnants. The remains of the city are in good condition.
Czechoslovakia built a system of border fortifications as well as some fortified defensive lines inland, from 1935 to 1938 as a defensive countermeasure against the rising threat of Nazi Germany. The objective of the fortifications was to prevent the taking of key areas by an enemy—not only Germany but also Hungary and Poland—by means of a sudden attack before the mobilization of the Czechoslovak Army could be completed, and to enable effective defense until allies—Britain and France, and possibly the Soviet Union—could help.
Seacoast defense was a major concern for the United States from its independence until World War II. Before airplanes, many of America's enemies could only reach it from the sea, making coastal forts an economical alternative to standing armies or a large navy. After the 1940s, it was recognized that fixed fortifications were obsolete and ineffective against aircraft and missiles. However, in prior eras foreign fleets were a realistic threat, and substantial fortifications were built at key locations, especially protecting major harbors.
Ouvrage Hochwald is a gros ouvrage of the Maginot Line, one of the largest fortifications in the Line. Located on the Hochwald ridge in the Fortified Sector of Haguenau in the community of Drachenbronn-Birlenbach in the Bas-Rhin department of northeastern France, it was designed to protect the northern Vosges region of France. Ouvrage Hochwald is sometimes considered as two ouvrages because of its separation of the western and the eastern portions of the ouvrage. Uniquely, the original plans for the position included an elevated battery to the rear with long-range 145 mm or 155 mm gun turrets of a new kind. Hochwald is used by the French Air Force as an armoured air defense coordination center.
Ouvrage Simserhof is a gros ouvrage of the Maginot Line, located in the French commune of Siersthal in the Moselle department. It faces the German border and is adjoined by the petit ouvrage Rohrbach and the gros ouvrage Schiesseck. Located 4 km west of Bitche, the ouvrage derived its name from a nearby farm. It was part of the Fortified Sector of Rohrbach. During the Battle of France in 1940, the Simserhof supported its neighboring fortifications with partially successful covering artillery fire. After the surrender of France, it was repurposed by the Germans as a torpedo storage depot, and later resisted the American advances of late 1944. The Americans briefly occupied the fort in the first days of 1945 until the German counter-offensive of Operation Nordwind, which allowed them to take back control of the Simserhof. The fort was finally liberated by the 100th Infantry Division on March 15, 1945. Following the war, it was initially repaired for the French Army and later converted into a Maginot Line museum in the early 1960s. Retained by the Ministry of Defense, Simserhof now functions as a museum, and has the most extensive visitor infrastructure of any of the preserved Maginot fortifications.
The Koules or Castello a Mare is a fortress located at the entrance of the old port of Heraklion, Crete, Greece. It was built by the Republic of Venice in the early 16th century, and is still in good condition today.
Ouvrage La Ferté, also known as Ouvrage Villy-La Ferté, is a petit ouvrage of the Maginot Line, located in the Fortified Sector of Montmédy, facing Belgium. The ouvrage lies between the towns of Villy and La Ferté-sur-Chiers. It possesses two combat blocks linked by an underground gallery. The westernmost position in its sector, it was a comparatively weakly armed fortification in an exposed position that left it vulnerable to isolation and attack. After a sustained attack during the Battle of France, the position was overwhelmed by German forces and was destroyed with its entire garrison killed. The fighting at La Ferté was the heaviest of any position in the Maginot Line. It is preserved as a war memorial.
The Fort de Maulde, also known as Fort de Beurnonville and the Ensemble de Maulde, is located to the south of Maulde, France. It is part of the Fortified Sector of the Escaut, an extension of the Maginot Line. The Séré de Rivières system fort was built 1881–1884. In 1936–1937 the old fort, commanding high ground behind Maulde, was altered for more modern fortifications. It was evacuated by its garrison in 1940 during the Battle of France as part of the French retreat from the border with Belgium.
The Bock is a promontory in the north-eastern corner of Luxembourg City's old historical district. Offering a natural fortification, its rocky cliffs tower above the River Alzette, which surrounds it on three sides. It was here that Count Siegfried built his Castle of Lucilinburhuc in 963, providing a basis for the development of the town that became Luxembourg. Over the centuries, the Bock and the surrounding defenses were reinforced, attacked, and rebuilt time and time again as the armies of the Burgundians, Habsburgs, Spaniards, Prussians, and French vied for victory over one of Europe's most strategic strongholds, the Fortress of Luxembourg. Warring did not stop until the Treaty of London was signed in 1867, calling for the demolition of the fortifications. Ruins of the old castle and the vast underground system of passages and galleries known as the casemates continue to be a major tourist attraction.
Fort Mahon is a sea fort by the commune of Ambleteuse in the Pas-de-Calais, northern France. The fort was built at the end of the 17th century by the military architect Vauban on the orders of Louis XIV to defend the port in the estuary of the Slack. It was designated a Monument historique in the 1960s.
Fort Hommet is a fortification on Vazon Bay headland in Castel, Guernsey. It is built on the site of fortifications that date back to 1680, and consists of a Martello tower from 1804, later additions during the Victorian Era, and bunkers and casemates that the Germans constructed during World War II.
Fort Vrmac is a former fortification of the Austro-Hungarian Empire located on the southern end of the Vrmac ridge near Tivat in Montenegro. Established in 1860, the present structure was built between 1894 and 1897, and saw action during the First World War, when it was heavily bombarded by the Montenegrins. It was repaired and disarmed before the end of the war and was abandoned after a period of occupation by Yugoslav troops. Today it is one of the best preserved Austro-Hungarian fortifications in the Bay of Kotor area.
The island of Guernsey has been fortified for several thousand years, the number of defence locations and complexity of the defence increasing with time, manpower and the improvements in weapons and tactics.
Nebojša Tower is the only surviving mediaeval tower of the Belgrade Fortress. Built in the 15th century, it was the major defensive tower of the fortress for centuries. Later it served as a dungeon and in 2010 it was adapted into the museum. The tower is located near the confluence of the Sava into the Danube.
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.
The Austro-Hungarian fortifications on the Italian border were constructed in the 19th and early 20th centuries to protect against invasion from Italy. Most were built in what is today the Trentino-Alto Adige region; some built outside this territory were ceded to Italy after 1866. By the First World War many of them were obsolete, but nevertheless played a role in deterring and containing Italian assaults.
