One of his incredibly far-reaching inventions was done in 1502 for Ottoman Sultan Bayezid II of Istanbul, Turkey. This project was a single span bridge, 720 feet long, intended to span an inlet at the mouth of the Bosphorus, the waterway in northwestern Turkey known as the Golden Horn. The sultan abandoned the project, believing that such a bridge was unachievable. As if to prove the sultan wrong, in 2001 a small bridge was constructed in Norway based on Leonardo’s designs. His brilliance has shone through from the centuries past.