Record: 304 mWuxi Maoye City - Marriott Hotel is a 304 m (997 ft) supertall skyscraper located in Wuxi, Jiangsu, China. Construction began in 2008 and ended in 2014. The building was one of the first supertalls in the city. Its core is made of reinforced concrete and is clad in a glass curtain wall. Belt trusses hide the mechanical floors on floors 26 and 46.