A nation of 83,600 square kilometres, it is home to two of the world's major airlines, Etihad and Emirates; the world's tallest building, the Burj Khalifa; and the first driverless mass transit system in the Middle East, the Dubai Metro. The UAE also boasts more than 1,300 kilometres of coastline, including beaches that attracts tourists from around the world, and is a destination for sailing, fishing and diving. It also has world-class sports stadia and is home to the Abu Dhabi Formula One Grand Prix, the Fifa Club World Cup tournament and the Dubai World Championship golf series, to name but a few.<br/> With a multicultural population of around five million people from every corner of the world, the UAE is one of the most vibrant and diverse nations on Earth.