 In 1957, the redoubt was leased to an entrepreneur named Benjamin White, who created a model village on the parade ground and constructed a new entrance from the moat, with a staircase that gives access from the promenade.The bandstand colonnade was converted into the Blue Grotto Aquarium, which was captured in 3D by VistaScreen.The model village was vandalised and then removed in the 1970s, and the aquarium closed in 1996.