Q1 Tower

Q1 Tower (an abbreviation of Queensland Number One) is a supertall skyscraper in Queensland, Australia. The residential tower on the Gold Coast was the world's tallest residential building from 2005 to 2011. As of 2023, it is the tallest building in Australia, the second tallest building in the Southern Hemisphere, and the third-tallest free-standing structure in the Southern Hemisphere, behind the Autograph Tower in Jakarta, Indonesia, and the Sky Tower in Auckland, New Zealand. The Q1 officially opened in November 2005. The landmark building was recognised as one of Queensland's icons during the state's 150th-birthday celebrations. Height At and with a roof height of , Q1 qualifies as the world's 17th tallest all-residential building when measured to the top of its structural point (spire), but is ranked lower behind buildings including Melbourne's Australia 108 (roof height of ) and the Eureka Tower (roof height of ) when measured to its roof height and highest inhabitable floor. However, according to the ranking system developed by the U.S.-based Council on Tall Buildings and Urban Habitat, the main criterion by which buildings are ranked is the height of the top of the spire, qualifying Q1 as the taller. When the Q1 was completed, it overtook the 21st Century Tower in Dubai, United Arab Emirates to become the world's tallest residential tower. When measured to its structural point, it dwarfs the Gold Coast skyline, with the closest buildings to Q1's height being the North Tower of Circle on Cavill and the Soul building.