Downtown Dubai, previously known as Downtown Burj Dubai, is a large-scale, mixed-use complex under development in Dubai, United Arab Emirates. It is the home of some of the city's largest landmarks including Burj Khalifa, Dubai Mall, and Dubai Fountain. It covers an area of 2 square kilometres (0.77 sq mi), at an estimated cost of US$20 billion (Dh73 billion) upon completion and as of 2017, had a population of 13,201.