Coral Castle is worth a visit but is getting more and more commercialized as time progresses. Despite all the publicity in articles, books, and film, it's not really mysterious, the work of aliens, and hasn't baffled scientists, engineers and scholars. It is the work of one man, Edward Leedskalnin and that is quite remarkable but it's also not a castle and not built of coral.
The official website states;
We invite you to tour our sculpture garden in stone, built by one man, Edward Leedskalnin. From 1923 to 1951, Ed 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. Open every day, the Coral Castle Museum welcomes visitors from around the world to explore this enchanting South Florida destination.
It was built by one man working alone for 28 years until his death in 1951. Edward Leedskalnin was a Latvian immigrant who is said to be, 5 feet tall and weighed 100 lbs. Legend has it that he was inspired to build the structure after being abandoned by his 16-year-old sweetheart on what was to be their wedding day. Spurned by his lost love, he set out to prove to her that he could do something remarkable, and make something of himself despite his poverty and fourth-grade education.
While he did succeed one factor that frequently omitted is that he had a background in stone work and understood leverage. Despite the reality of this man's work, it's without a doubt quite an accomplishment worth a visit when in the Miami area.