A grass tennis court may be common in modern sports, but these anomalous designs aim to make the game a bit more exciting. Continue reading to see more. Click here for first picture in gallery.

Sky High

This tennis court, located atop the Burj Al Arab in Dubai, is the world’s highest. When not used for extreme sport matches, it doubles as a helicopter landing pad. One caveat: tennis balls that go over the edge will be nearly impossible to retrieve.

Floating Tennis Court

American Express decided to construct a floating tennis court of sorts in Potters Fields Park as a marketing stunt. They invited John McEnroe and Monica Seles to play a match while floating down River Thames. Monica says: “I have never done anything even close to this before. I am thinking this was a dream.”