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.