Coral Castle - the sculpture garden in stone was built by one man, Edward Leedskalnin. In years 1923-1951, he single-handedly and secretly carved over 1,100 tons of coral rock, and his unknown process has created one of the world’s most mysterious accomplishments. The Coral Castle Museum roused of admiration of visitors from around the world. Why a man spent 28 years to carve a Coral Castle from the ground up using nothing but homemade tools. Perhaps to illustrate ancient sciences that defy gravity? Or maybe something else? With few exceptions, the objects are made from single pieces of stone that weigh on average 15 short tons (14 t) each. The largest stone weighs 30 short tons (27 t) and the tallest are two monoliths standing 25 ft (7.6 m) each. The stones are fastened together without mortar. They are set on top of each other using their weight to keep them together. The craftsmanship detail is so skillful and the stones are connected with such precision that no light passes through the joints. The 8-foot (2.4 m) tall vertical stones that make up the perimeter wall have a uniform height. Even with the passage of decades and a direct hit on August 24, 1992, by the Category 5 Hurricane Andrew, the stones have not shifted. Many of the features and carvings of the castle are notable, including a heart-shaped table, a table in the shape of Florida, twenty-five rocking chairs, chairs resembling crescent moons, a bathtub, beds and a throne.