A Century-Old Mystery: The Coral Castle Built by One Man

Edward Leedskalnin built a castle in Florida for the woman he loved, working alone for 28 years and carving about 1,100 tons of stone. How he moved the massive coral blocks remains the mystery at the heart of the site.

Leedskalnin was born in Latvia in 1887 and worked as a stonemason after leaving school in the fourth grade. At 26, he fell in love with Agnes Suffs, who was 16. They became engaged, but she left him one day before their wedding in 1919. It is said that her parents opposed her marrying a poorly educated stonemason.

Leedskalnin moved to Miami and, in February 1923, bought about 8,000 square metres of land in Florida City, 48 kilometres south of Miami, for $10. From 1923 until his death in 1951, he built what he called a monument to his “sweet sixteen”, his name for Agnes. The site includes walls, furniture, a crescent moon, a fountain and a sundial, all carved from stone.

The scale of the work has kept the questions alive. The largest block weighs 30 tons, while some coral blocks weigh 15 tons. The site is enclosed by a three-metre wall and includes two monoliths standing eight metres high. Leedskalnin was about 1.50 metres tall and weighed 54 kilograms, making the construction appear even more difficult to explain.

He said his method involved precise knowledge of weights and levers, along with tripods, pulleys and winches. Old photographs show him beside a wooden pine tripod fitted with chains. Yet no one saw the castle being built. Leedskalnin reportedly worked at night by flashlight, and theories about the site have included alleged extraterrestrial help. The story later inspired British rocker Billy Idol to record a song titled “Sweet Sixteen”.