While China's ghost cities are now a well-known occurrence - massive empty spaces built "Fields of Dream" style for when 'they' come from the countryside - the following massive 500,000 square meters of 'Ghost Pentagon' surely takes the proverbial biscuit when it comes to mal-investment mania. As The BBC reports, the Pentagonal Mart - a shopping mall in Shanghai built in 2009 - inspired by the Pentagon in the United States - has now gained the dubious title of China's largest empty building.
http://www.youtube.com/watch?v=nkdYd9j-vYY
And from the inside out, the 70-acre site - only slightly smaller than the largest shopping mall in the world, the Dubai Mall in the United Arab Emirates - is almost entirely vacant...