World's largest building opens...and much much more!

News: the largest man-made structure in the world has opened in China's Sichuan province, housing hotels, offices, a beach resort and an artificial sun. Capable of housing 20 Sydney Opera Houses or three Pentagons in its staggering 1.7 million square-metre interior the New Century Global Centre in Chengdu opened its doors on 1 July 2013.