The Race is on. Being the avid swimmer I have a collection of favourite pools around the world. Here is one of them. Do you know where it is? (click on it for the larger view) There's also a kind of illusion in the image too - a nice one - can you identify it? Winners are the first correct, and most creative responses. Bonus points if you can tell me how long it is. See you at the deep end. Good luck!