I hadn’t heard of this before, and I don’t know why. A guy built what’s called the “Coral Castle” – all by himself. Some of the stones weigh 30 TONS. He claims to have discovered the secret of the pyramids – using the magnetic grid of the earth – and built the castle entirely at night. (Some children claim he ‘floated the stones like balloons’.) A 9-ton gate is so well balanced a child could open it with the touch of a finger. Go see the photos and all at: Coral Castle. (I’ve been reading up on Nikola Tesla a lot lately too – this stuff is WAY too much fun and way too intriguing!)