construction project to form living accommodation for the garrison instead. Another gun room occupies the first floor, with seven gun embrasures, and is dressed to appear as it would have done in the 16th century. The roof has seven gun embrasures and a lookout turret. The polygonal gun platform around the keep has 16 sides, with a total of 14 gun embrasures. The two-storey forebuilding dates from the second half of the 16th century, with three rooms on each level linked by a spiral-staircase, and was originally used to house the captain of the castle. Its entrance was guarded with a portcullis, and the roof was designed to be defendable with handguns. The stone bridge that stretches across the ditch that protects the castle dates from 1902; it would originally have been protected at the front by a rectangular gatehouse, but this was demolished at the start of the 20th century. The rest of the interior of the fortress was, at various times, occupied by a range of different military buildings, but they have mostly been demolished and grassed over to form a large parade ground. Among the surviving buildings are the Royal Garrison Artillery barracks, located to the north of the parade ground. Built between 1900 and 1902, it could hold 140 soldiers in 12 man barrack-rooms. Alongside the barracks are bungalows, originally for the use of senior non-commissioned officers, a storehouse dating from the Napoleonic Wars, and two guard barracks from 1700, which form a very early example of this form of military architecture in England. Other buildings that have survived include a 19th-century field train shed, and an 18th-century gunpowder magazine, since converted into a shelter for gunners. External defences Three defensive positions are positioned outside the main ramparts of the castle. To the south, reached by an underground passage, is the Half-Moon Battery, constructed in 1793 and redesigned in 1895 and 1941. This has two camouflaged gun houses and 6-inch guns dating from the Second World War, when it held a team of 99 soldiers. Further south, near the waterline, is the Little Dennis Blockhouse, a D-shaped gun position dating from 1539, altered in the 1540s and then adapted to form part of a larger fortification covering the whole of Pendennis Point in the late 16th century. Built from Killas rubble, the exterior of the blockhouse and its lookout turret still survive intact. Just along the