The Burj is made of a steel frame exterior wrapped around a concrete tower, with white Teflon-coated fiberglass forming the building’s white “sail.” At night, the Burj is lit up in a spectacular show of changing colors. A helipad and glass-enclosed restaurant extend from the top. The expensive hotel features the world’s largest atrium, and the opulent interior design includes 8,000 sq. meters (86,111 sq. ft.) of 22-carat gold leaf.