Street art meets industrial chic in Germany's Urban Art Biennial

The sprawling Volklinger Hutte ironworks in Germany used to be one of the biggest producers of steel in Europe before it was shut down in 1986.

The industrial monument is now a UNESCO World Heritage Site and is regularly used for events and exhibitions such as the 2013 Urban Art Biennial, which sees a number of artworks by high-profile street artists dotted throughout the site.

Tom Santorelli reports.