No other ten­nis court in the world has quite the view (or drop) as the one at the Burj Al Arab hotel in Dubai. Located more than 650 ft (200 m) above ground, the hotel’s grass heli­pad was con­verted into a 4500 sq ft (415 sq m) ten­nis court to pro­mote the Dubai Open back in 2005. Long­time rivals Andre Agassi and Roger Fed­erer had the oppor­tu­nity to play on the court and even fired a few balls off the edge.