The black-and-white tower on Anastasia Island, lit in 1874, whose most-told ghosts are three little girls, the daughters of the builder, who drowned in the bay when their play-cart ran into the water during construction. Keepers and ghost-hunters report their laughter on the stairs. You can climb all 219 steps by day and hunt the dark by night.
Anastasia Island, St. Augustine (FL)
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Other places on the map within a couple of hours.