Ed Leedskalnin carved this welcoming sign at the entrance to his Coral Castle: “YOU WILL BE SEEING UNUSUAL ACCOMPLISHMENT”. It is generally accepted that this refers to the mysterious castle itself. Another way of reading it, though, would be: “You will be SEEING. Unusual accomplishment”.
Ed single-handedly built not one, but two coral castles. He would only build at night, and never allowed anyone to sneak up on him and watch him work. The exception was a group of children, who once saw him singing to the enormous coral rocks and making them levitate.
He built the castle for his “Sweet Sixteen”. Most people also believe that he was only referring to his fiancée Agnes Stuff, who called off their wedding one day before the ceremony, back when he was a young man. However, he also made it clear that the number sixteen was very important for him in non-conventional, mathematical ways.
Then again, aren’t we also waiting for our Sweet Sixteen, and building our castles of infinite love for them?