A heart­bro­ken man sin­­gle-hand­ed­­ly built Coral Cas­tle in Home­stead, Flori­da, over the course of 25 years, up until his death in 1951. With­out the use of large machin­ery, he cut, moved, carved and sculpt­ed more than 1,100 tons of coral rock. How exact­ly he man­aged this feat of engi­neer­ing with only hand tools is still an impres­sive mys­tery.