Miami's contemporary art scene is world-renowned, but no local exhibition has baffled scientists and engineers quite like the Coral Castle Museum in Homestead. The limestone sculpture garden is often referred to as Florida's Stonehenge because no one's quite sure how its eccentric creator, Edward Leedskalnin, singlehandedly carved more than 1,000 tons of coral rock, including a tower, furniture, and a nine-ton gate that moves with the touch of a finger, without modern construction equipment. Cryptically, Leedskalnin, who is said to have stood just over five feet tall and tipped the scales at 100 pounds, would boast that he "knew the secrets of the pyramids," but whatever those were, he took them with him to the grave in 1951. There has been speculation about supernatural powers and reverse magnetism, providing fodder for segments of Ancient Aliens and Leonard Nimoy's series In Search of....