Coral Castle
1923–1951 CE
A monument built single-handedly by Edward Leedskalnin, a 5-foot-tall, 100-pound Latvian immigrant, using over 1,100 tonnes of coral rock — all without modern machinery, cranes, or witnessed assistance. He worked only at night and refused to reveal his methods. How he moved and placed 30-tonne stones alone remains unexplained.
