Completed in 2000, London's Millennium Bridge is the first pedestrian-only crossing built over the Thames in central London in over 100 years.
The steel structure connects the City of London at St. Paul's Cathedral with the Tate Modern Gallery at Bankside. The suspension bridge is a feat of engineering, art, and architecture that provides far-reaching views in both directions over the river.
For a leisurely afternoon and a parade of Londoners and tourists, stroll the banks of the Thames on either or both sides before you cross the bridge. (P.S. The bridge was featured in the dramatic opening scene of 2009's Harry Potter and the Half-Blood Prince.)