Watch Tower

Watch Tower is a place and challenge in Fort Boyard UK. It was played every episode.

Info
The contestant goes up to the Watch Tower, and The Professor gives him or her a riddle. In the ordeals, he gives him 3 riddles, all with the same one word answer. If the contestant get it right, they will win a key or a clue. If they get it wrong, he will throw it out of the window and one of the contestants has to swim for it.