The Millennium Bridge is a bridge for walkers. It was built to connect the Tate Modern Art Gallery to the City and St Paul's Cathedral in 2000. Thousands of people rushed to see the new bridge. Almost immediately after opening, the bridge had to be shut because of the dangerous waving caused by too many visitors. It has now been reopened. The bridge is about 320 meters, costs 16 million pounds to build and only takes walkers.