Downtown Dubai is the city's flagship urban district, developed by Emaar Properties around the Burj Khalifa, the world's tallest building. Often called "the centre of now", it brings together landmark architecture, luxury hotels and some of the most prestigious residential towers in the city. Residents live steps from The Dubai Mall, The Dubai Fountain, Dubai Opera and Souk Al Bahar, with Mohammed Bin Rashid Boulevard offering cafés, restaurants and boutiques at street level. Homes range from refined apartments to sky-high penthouses with Burj Khalifa and fountain views. Served by the Dubai Metro and adjacent to DIFC and Business Bay, Downtown Dubai is the address of choice for those who want to live at the heart of the city.