The Burj Al Arab is a hotel in Dubai, United Arab Emirates. It is the fourth largest hotel in the world, after Rose Tower, which is also in Dubai. It is very expensive to stay at the Burj Al Arab. It is known as the world's only 7 star hotel. On the top of the Burj Al-Arab there is helipad which is sometimes used as a tennis court for high paying guests.The hotel was built by South African construction contractor Murray & Roberts. The hotel cost $650 million to build.