The last beam of the 2,073.5-foot building, called Shanghai Tower, was put in place during a ceremony, Voice of America reported.
Workers will now start construction on the interior of the building, which will contain retail and office space, a luxury hotel and possibly a museum.
The building, which is 125 stories and was designed by American architectural firm Gensler, will be completed in 2015, China's official Xinhua News Agency reported.
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