Just outside the walls of Fort Charles, the Giddy House is a small brick artillery store built in 1888 for the Victoria and Albert Battery. In the 1907 Kingston earthquake the soft sandy ground beneath it gave way, tipping the building sharply to one side. It has stayed that way ever since.
You can walk inside, but the floor and walls are noticeably out of plumb and the effect is genuinely disorientating: a few seconds and your balance gives up. The building has become Port Royal's most photographed structure after the fort itself, and a small reminder that the geology of the spit on which the town sits has been working against it for centuries.