The Coral Castle was built by one man, working alone. It took him 20 years to build - from 1920 to 1940. Carved and sculpted from 1100 tons of coral, this monument was built out of Edward Leedskalnin's obsessed love for a young girl. The mystery remains since Coral Castle's opening in 1923; how could Ed, 5 ft tall and 100 lbs., have carved and moved over 1100 tons of rock without any human help?