Mystery of the Coral Castle Explained

coral castle, engineering
Author Benjamin Radford is shown visiting Florida's mysterious Coral Castle in 2012.
(Image credit: Benjamin Radford.)

In Homestead, Fla., not far from Miami and off the South Dixie Highway, sits a world-famous structure called the Coral Castle. Though not really a castle — and not really made of coral — it is nonetheless an amazing achievement. More than 1,000 tons of the sedimentary rock (oolite limestone) was quarried and sculpted into a variety of shapes, including slab walls, tables, chairs, a crescent moon, a water fountain and a sundial.

"You are about to see an engineering marvel that has been compared with Stonehenge and the Great Pyramids of Egypt," touts an information sheet available at the site. Many sources claim that the castle, originally called Rock Gate Park, is scientifically inexplicable. According to the attraction's website, "Coral Castle has baffled scientists, engineers and scholars since its opening in 1923." It has appeared countless times in books, magazines, and television shows. Rock musician Billy Idol even wrote a hit song about the place, "Sweet Sixteen." The park is listed on the National Register of Historic Places.

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Benjamin Radford
Live Science Contributor
Benjamin Radford is the Bad Science columnist for Live Science. He covers pseudoscience, psychology, urban legends and the science behind "unexplained" or mysterious phenomenon. Ben has a master's degree in education and a bachelor's degree in psychology. He is deputy editor of Skeptical Inquirer science magazine and has written, edited or contributed to more than 20 books, including "Scientific Paranormal Investigation: How to Solve Unexplained Mysteries," "Tracking the Chupacabra: The Vampire Beast in Fact, Fiction, and Folklore" and “Investigating Ghosts: The Scientific Search for Spirits,” out in fall 2017. His website is www.BenjaminRadford.com.