Coral Castle, Homestead, Florida
The mystery of this place can never be solved as the revealer himself died years ago. It is unconvincing that a single man Edward Leedskalnin also a Latvian immigrant built this magnificent coral castle single-handedly. Notably, the castle is made of several limestones boulders, some of them have a weight of 15 tons. The construction took him over 25 years.
