Standing at 2,717 feet (828 m), the Burj Khalifa in Dubai, United Arab Emirates, is the tallest building in the world (and casts quite a long shadow!). The design of the 163-floor structure is an abstraction of the Hymenocallis, a type of desert flower that has long petals extending from its center. The building has been well received since it opened in 2010; however, its construction was controversial as it was built primarily by workers from South Asia and East Asia who earned low wages and were housed in abysmal conditions.25.197139°, 55.274111°