This rather appropriately named two-story, 60-room mansion on the peninsula east of East Harbour was built entirely of concrete in pseudo-Grecian style by North American millionaire Alfred Mitchell in 1902. Short-sightedly, sea water was used in the concrete mix, causing the iron reinforcing rods to rust and the roof to collapse in 1936. What’s left is a fantastically evocative ruin that deserves a place on the cover of The Great Gatsby . The shell of the structure remains, held aloft by limestone columns, and makes a perfectly peculiar locale for a picnic. The orange candy-striped Folly Point Lighthouse , built in 1888, overlooks Woods Island.
