The tallest building in the world, Burj Khalifa in Dubai, UAE is developed by Emaar Properties. One of the most sought- after building in the world, spanning over 828 metres, it has over 160 storeys. The towering skyscraper looks over most of the Downtown Dubai area and is also home to the first authentic Armani Hotel with more than 300 rooms. This building also features 900 residential units and one can choose from studios, apartments and penthouses. Offering a wide variety of amenities and facilities, the tallest building as a whole is popular with residents and tourists alike.