14 Mysterious Landmarks That Science Still Can't Fully Explain

10. The Coral Castle (Homestead, Florida, USA): A Modern Megalithic Mystery

The Coral Castle is a baffling modern marvel, single-handedly constructed by Latvian immigrant Edward Leedskalnin between 1923 and 1951. Using only homemade tools and seemingly primitive methods, he quarried, carved, and erected over 1,100 tons of coral rock, including a 9-ton gate that pivots with the touch of a finger. Despite extensive study, engineers cannot fully explain how Leedskalnin, a frail man, achieved such feats. His cryptic hints about understanding "the secrets of the pyramids" only deepen the enigma, defying conventional physics and engineering.