I have been thinking allot about Coral Castle since I posted that reply yesterday. It really was amazing how he did it. And no one knows for sure how he did it. When I go back to my hometown in November, to cruise on the Carnival Triumph; I will try to stop by and visit Coral Castle. I was only there once in my life (when I was really young; about 5). Although I did drive by it more than a few times.
Anyway, on YouTube, there is a video about Coral Castle. The video looks like it is an episode from the Weird Travels TV series. Click here to see it: Coral Castle Video