The World's Most Expensive Hotel The Burj Al Arab Hotel in Dubai is the world's only seven-star hotel. The hotel is an architectural wonder. it looks like a huge sail. its height is 1053 feet (321 meters),making it one of the world's tallest buildings. The Burj Al Arab (Arabian Tower) is built on a human-made island. it is the world's most luxurious hotel. The cheapest suite is more than $2000 per night,and the most expensive suite can cost over $15000.