Chinese ghost towns are a well documented phenomenon - completely built up cities with very few people living in them.

But the Pentagonal Mart has now gained the dubious title of Shanghai's largest empty building.

This shopping mall in Shanghai was built in 2009 - inspired by the Pentagon in the United States.

But despite its massive size - 500,000 sq m - there are very few shoppers in sight. The BBC takes a look inside.

Video by Curtis Rodda