Coral Castle is a stone structure created by the Latvian-American eccentric, Edward Leedskalnin, north of the city of Homestead, Florida in Miami-Dade County at the intersection of U.S. Route 1 (South Dixie Highway) and Southwest 157th Ave. The structure comprises numerous megalithic stones (mostly coral), each weighing several tons.
Mysteries abound with regard to this place. One of the stones is engraved with this:
For trivia buffs, the Coral Castle was the location for two of the very worst movies I have ever seen: The Wild Women of Wongo and the truly indescribable Nude on the Moon. I'm a Z-movie fanatic but even I have trouble watching these.