Q1 Worlds Tallest Residential Building

Surfers Paradise Q1 building. At 322.5 m (1,058 ft) and with a roof height of 275 m (902 ft), Q1 qualifies as the world's tallest all-residential building when measured to the top of its structural point (spire), but is the world's second tallest behind Melbourne's Eureka Tower (roof height of 297.3 metres, 975 ft) when measured to its roof height and highest inhabitable floor. However, according to the ranking system developed by the US-based Council on Tall Buildings and Urban Habitat, the main criterion by which heights are ranked is the height of the top of the spire, qualifying Q1 as the taller.