Goat's Hair Twin Caves

Martin's Cave is a cave in the British Overseas Territory of Gibraltar. It opens on the eastern cliffs of the Rock of Gibraltar, below its summit at O'Hara's Battery. It is an ancient sea cave, though it is now located over 700 feet (210 m) above the shore of the Mediterranean Sea. It is only accessible because Martin's Path was constructed.

Hyaena Cave is a cave in the British Overseas Territory of Gibraltar. It forms part of the Gorham's Cave complex which has been nominated for UNESCO World Heritage Site status.

Vanguard Cave is a natural sea cave in the British Overseas Territory of Gibraltar which is part of the Gorham's Cave complex. This complex of four caves has been nominated as a UNESCO World Heritage Site status in 2016. The cave complex is one of the last known habitations of the Neanderthals, with a period of inhabitation from 55,000 to 28,000 years ago. It is located on the southeast face of the Rock of Gibraltar.

Fig Tree Cave is a cave in the British Overseas Territory of Gibraltar. It is located on the eastern cliffs of the Rock of Gibraltar, not far from Martin's Cave within the Upper Rock Nature Reserve.

O'Hara's Battery is an artillery battery in the British Overseas Territory of Gibraltar. It is located at the highest point of the Rock of Gibraltar, near the southern end of the Upper Rock Nature Reserve, in close proximity to Lord Airey's Battery. It was constructed in 1890 at the former site of a watchtower that had earned the name O'Hara's Folly. The battery and tower were both named after the Governor of Gibraltar Charles O'Hara. The first gun mounted on the battery was a 6-inch breech loading gun, which was replaced with a 9.2 inch Mark X BL gun in 1901. The battery was in use during World War II and was last fired during training exercises in 1976. O'Hara's Battery has been refurbished and is open to the public. The battery and its associated works are listed with the Gibraltar Heritage Trust.

O'Hara's Tower was a watchtower in the British Overseas Territory of Gibraltar. It was located at the highest point of the Rock of Gibraltar, at what is now O'Hara's Battery, near the southern end of the Upper Rock Nature Reserve. Initially known as St. George's Tower, it was constructed in the late 18th century on the order of then Lieutenant Governor Charles O'Hara, under the presumption that it would be useful in observing the enemy at the Port of Cadiz. Not only was it unsuccessful; it was struck by lightning shortly after it was built, and remained in ruins for much of the 19th century until its demolition in 1888. Formerly referred to as St. George's Tower, it came to be known as O'Hara's Tower or, frequently, O'Hara's Folly.

Monkey's Cave is a cave in the British Overseas Territory of Gibraltar. It has been used as part of the Fortifications of Gibraltar and in 1942 there was a convalescent hospital here. This building was later used as the HQ of the Royal Electrical & Mechanical Engineers.

AROW Street is a tunnel in Gibraltar that was excavated in 1942. The tunnel, like Gibraltar's Great North Road, was large enough to take Army ammunition trucks.

Boathoist Cave (or Boat Hoist Cave), also known as Bulman's Cave, is a huge sea cave on the south eastern flank of the British Overseas Territory of Gibraltar.

George's Bottom Cave is a cave in the British Overseas Territory of Gibraltar. This together with Tina's Fissure and Levant Cave are a close group of three caves at the southern end of the Upper Rock Nature Reserve.The existence of George's Bottom Cave was suspected on 27 November 1965 when the Gibraltar Cave Research Group found a small hole in the Rock of Gibraltar near Spur Battery, 310 metres (1,020 ft) above sea level. As the group could feel a draught from this hole they suspected it was the entrance to a cave and they arranged to have a large boulder moved to reveal a larger but still small entrance. The cave was named after George Palao of the Gibraltar Museum. Having entered the cave, visitors find that the passage is tight, which necessitates crawling at some points. Crawling in is made no easier by the cave coral which together with the curtains, columns, straws, and helictites create a variety of limestone formations. However, the cave has six different levels which contain a wide variety of formations in numerous chambers and fissures.

Spur Battery is an artillery battery in the British Overseas Territory of Gibraltar. It is located in the Upper Battery area of the southern end of the Upper Rock Nature Reserve, just southwest of O'Hara's Battery. A 9.2-inch Mark X breech-loading gun was mounted on the emplacement in 1902, with improvements made to the battery after World War I. In 1981 the 9.2-inch gun at Spur Battery was dismantled and transferred to the Imperial War Museum in Duxford, England, for preservation. The operation was known as Project Vitello.

The Rock of Gibraltar (from the Arabic name Jabal Ṭāriq جبل طارق) is a monolithic limestone promontory located in the British territory of Gibraltar, near the southwestern tip of Europe on the Iberian Peninsula, and near the entrance to the Mediterranean. It is 426 m (1,398 ft) high. Most of the Rock's upper area is covered by a nature reserve, which is home to around 300 Barbary macaques. These macaques, as well as a labyrinthine network of tunnels, attract many tourists each year. The Rock of Gibraltar, one of the two traditional Pillars of Hercules, was known to the Romans as Mons Calpe, the other pillar being Mons Abila, either Monte Hacho or Jebel Musa on the African side of the Strait. According to ancient myths fostered by the Greeks and the Phoenicians, and later perpetuated by the Romans, the two points marked the limit to the known world, although the Phoenicians had actually sailed beyond this point into the Atlantic, both northward and southward.The Mediterranean Sea surrounds Gibraltar.