Q1 (meaning Queensland Number One) is a skyscraper located in Surfers Paradise, the tourism hub in Gold Coast, Australia.
At 322.5 metres (1,058 feet), Q1 is the world's tallest all-residential building, when measured to the top of its structural point.
Q1 overtook the 21st Century Tower in Dubai, United Arab Emirates as the world's tallest residential tower. It is the 20th tallest building in the world when measured to its structural point, dwarfing the Gold Coast skyline with the closest buildings to Q1's height being the 220 m (722 ft) North Tower of Circle on Cavill and the under construction 240 m (787 ft) Soul Building.
The 91-storey Eureka Tower in Melbourne, Victoria has also been described as the tallest residential building in the world, and the tallest building in Australia. According to the ranking system developed by the US-based Council on Tall Buildings and Urban Habitat, Q1 qualifies as the taller building in two of the four categories in which heights are ranked, namely Pinnacle Height and Architectural Top, due to its 97.7 metre spire. The Eureka Tower is taller in the other two categories, Roof Height and Highest Occupied Floor. The roof height of Q1 is 275m compared to Eureka's roof height of 297m.
Q1 will lose its status as the world's tallest residential building sometime in 2009, when the 414 metre (1,358 ft) Princess Tower in Dubai is completed.
Design and construction
Q1 was designed by Atelier SDG, the inhouse design team of Sunland Group. Its form was inspired by the Sydney 2000 Olympic torch and the Sydney Opera House. The name given to the tower is an acronym of "Queensland Number One" – Q1.
It was developed by The Sunland Group and built by Sunland Constructions. The building was the Silver Award winner of the 2005 Emporis Skyscraper Award, coming in second to Turning Torso in Sweden.
The observation deck at levels 77 and 78 is one of the world's few beachside observation decks, and has room for 400 people.