Coral Castle is a stone structure created by the Latvian-American eccentric Edward Leedskalnin north of the city of Homestead. The structure comprises numerous megalithic stones (mostly limestone, formed from coral), each weighing several tons. The grounds of Coral Castle consist of 1,100 tons of stones found in the forms of walls, carvings, furniture and a castle tower. The stones are fastened together without any mortar - they are simply set on top of each other using their immense weight to keep them together. However, the craftsmanship detail is so skillful that the stones are connected with such precision that no light passes between the seams. The largest stone weighs 30 tons, which is over three times the size of the heaviest stone found in the Great Pyramid of Giza