The Great Siege of Gibraltar was an unsuccessful attempt by Spain and France to capture Gibraltar from the British during the War of the American Revolution. It was the largest battle in the war by number of combatants.
The Great Siege Tunnels in the British Overseas Territory of Gibraltar, also known as the Upper Galleries, are a series of tunnels inside the northern end of the Rock of Gibraltar. They were dug out from the solid limestone by the British during the Great Siege of Gibraltar of the late 18th century.
The North Bastion, formerly the Baluarte San Pablo was part of the fortifications of Gibraltar, in the north of the peninsula, protecting the town against attack from the mainland of Spain. The bastion was based on the older Giralda tower, built in 1309. The bastion, with a mole that extended into the Bay of Gibraltar to the west and a curtain wall stretching to the Rock of Gibraltar on its east, was a key element in the defenses of the peninsula. After the British took Gibraltar in 1704 they further strengthened these fortifications, flooding the land in front and turning the curtain wall into the Grand Battery.
The Landport is a gate into the territory of Gibraltar. It was originally the only entrance to the fortification from the land and so was heavily fortified and guarded.
Wellington Front is a fortification in the British Overseas Territory of Gibraltar. It was built in 1840 on a site established by the Spanish in 1618.
Hesse's Demi Bastion is a demi-bastion in the British Overseas Territory of Gibraltar. It is part of the Northern Defences of Gibraltar. The bastion forms a link in a chain of fortifications which ascend the lower north-west slopes of the Rock of Gibraltar, below the King's Lines Battery and Bombproof Battery. The Moorish Castle's Tower of Homage is at the top of the same incline.
Buena Vista Battery was an artillery battery near the Buena Vista Barracks at the southern end of the British Overseas Territory of Gibraltar. It is located on a slight ridge in front of the nearby Buena Vista Barracks, which was once the base of the Royal Gibraltar Regiment.
The Europa Batteries are a group of artillery batteries in the British Overseas Territory of Gibraltar. Facing the North African coast, they are the most southerly batteries in Gibraltar and were built to cover ships approaching from the Mediterranean Sea. They run along the fortified clifftops of Europa Point from Camp Bay on the west side of the Rock of Gibraltar to the Europa Advance Batteries on the east side.
Zoca Flank Battery is an artillery battery on the west side of the British Overseas Territory of Gibraltar.
Castle Batteries are a series of artillery batteries that are part of the Northern Defences of the British Overseas Territory of Gibraltar. The batteries descend from the Moorish Castle to end at the sixth and seven batteries which are known as Crutchett's Batteries. There are brick vaulted bombproof rooms (casemates) under Crutchets Battery.
The Gibraltar peninsula, located at the far southern end of Iberia, has great strategic importance as a result of its position by the Strait of Gibraltar where the Mediterranean Sea meets the Atlantic Ocean. It has repeatedly been contested between European and North African powers and has endured fourteen sieges since it was first settled in the 11th century. The peninsula's occupants – Moors, Spanish, and British – have built successive layers of fortifications and defences including walls, bastions, casemates, gun batteries, magazines, tunnels and galleries. At their peak in 1865, the fortifications housed around 681 guns mounted in 110 batteries and positions, guarding all land and sea approaches to Gibraltar. The fortifications continued to be in military use until as late as the 1970s and by the time tunnelling ceased in the late 1960s, over 34 miles (55 km) of galleries had been dug in an area of only 2.6 square miles (6.7 km2).
The Inundation was a flooded and fortified area of ground on the sandy isthmus between Spain and Gibraltar, created by the British in the 18th century to restrict access to the territory as part of the fortifications of Gibraltar. It was originally a marshy area known as the Morass at the far south-western end of the isthmus, occupying the area adjacent to the north-western flank of the Rock of Gibraltar. The Morass was dug out and expanded to create an artificial lake which was further obstructed by iron and wooden obstacles in the water. Two small fortifications on either side controlled access to Gibraltar. The only road to and from the town ran along a narrow causeway between the Inundation and the sea which was enfiladed by batteries mounted on the lower slopes of the Rock. The Inundation existed for about 200 years before it was infilled and built over after the Second World War.
The King's Lines are a walled rock-cut trench on the lower slopes of the north-west face of the Rock of Gibraltar. Forming part of the Northern Defences of the fortifications of Gibraltar, they were originally created some time during the periods when Gibraltar was under the control of the Moors or Spanish. They are depicted in a 1627 map by Don Luis Bravo de Acuña, which shows their parapet following a tenaille trace. The lines seem to have been altered subsequently, as maps from the start of the 18th century show a more erratic course leading from the Landport, Gibraltar's main land entrance, to the Round Tower, a fortification at their western end. A 1704 map by Johannes Kip calls the Lines the "Communication Line of the Round Tower".
The Prince of Wales Lines were a set of earthworks constructed in Gibraltar in 1756 on the orders of Lord Tyrawley, during his term as Governor of Gibraltar. They consisted of a series of retrenchments for guns and muskets constructed between the glacis of the South Front to the New Mole, south of Gibraltar's urban area.
Prince Henry's Battery was an artillery battery built in Gibraltar during the Anglo-Spanish War of 1762–63, adjoining the Prince of Wales Lines. They mounted three 32-pdr guns with two more 18-pdrs, six 12-pdrs and three 4-pdrs on the Lines. After 1841, the battery was rebuilt as a retired battery as part of a mid-19th century remodelling of Gibraltar's southern defences. They were eventually built over in 1859–60 when the Prince of Wales Batteries were constructed on the same site.
The Windmill Hill Batteries are a series of artillery batteries situated on Windmill Hill, Gibraltar near the south of the peninsula. They are part of the fortifications of Gibraltar. The batteries were originally established by Lt General Edward Cornwallis during his governorship of Gibraltar between 1762–77, built on the site of the old windmills after which the hill was named. The singular Windmill Hill Battery refers to one particular battery almost equidistant between Genista Battery and Europa Advance Battery.
Prince Albert's Front is a curtain wall that formerly comprised part of the seafront fortifications of Gibraltar. It runs between the King's Bastion and Orange Bastion. The Front was constructed in 1842 after a report by Major General Sir John Thomas Jones recommended improving Gibraltar's seafront defences to guard against the threat of an amphibious assault. It was named after Prince Albert, Queen Victoria's prince consort. The Front straightened out the line of Gibraltar's coastal curtain wall; parts of the original curtain wall, some of which dates from the Moorish period over 500 years ago, can still be seen.
The tunnels of Gibraltar were constructed over the course of nearly 200 years, principally by the British Army. Within a land area of only 2.6 square miles (6.7 km2), Gibraltar has around 34 miles (55 km) of tunnels, nearly twice the length of its entire road network. The first tunnels, excavated in the late 18th century, served as communication passages between artillery positions and housed guns within embrasures cut into the North Face of the Rock. More tunnels were constructed in the 19th century to allow easier access to remote areas of Gibraltar and accommodate stores and reservoirs to deliver the water supply of Gibraltar.
The Prince's Lines are part of the fortifications of Gibraltar, situated on the lower slopes of the north-west face of the Rock of Gibraltar. They are located at a height of about 70 feet (21 m) on a natural ledge above the Queen's Lines, overlooking the landward entrance to Gibraltar, and run from a natural fault called the Orillon to a cliff at the southern end of the isthmus linking Gibraltar with Spain. The lines face out across the modern Laguna Estate, which stands on the site of the Inundation, an artificial lake created to obstruct landward access to Gibraltar. They were constructed to enfilade attackers approaching Gibraltar's Landport Front from the landward direction.
