Work has been completed on the main structure of the tallest building in China, the Shanghai Tower.
A flag-waving ceremony took place as the last steel beam was hoisted and installed at the top of the skyscraper.
Construction will now start on the building's interior. Once completed, the structure will reach over 630 metres, making it the second-tallest building in the world after the Burj Khalifa in Dubai.
It will be part of the Lujiazui Finance and Trade Zone, which includes the Shanghai World Financial Center and Jin Mao Tower.
Work on the tower began in 2008: it will contain retail and office space, a luxury hotel and possibly even a museum.
The Shanghai tower has cost an estimated 14.8 billion yuan ($US2.4 billion). The BBC reports it is due to be completed in 2014.