Go inside one of the world's most famous sights (image © Tomas Sereda/iStock/Thinkstock)
This breathtaking bridge, completed in 1894, is one of London’s most famous landmarks (not to be confused with its less grand, but much older neighbour, London Bridge). You can tour the engine rooms with a passionate guide and even join a yoga class on the glass walkways, 42m above the River Thames. Joint tickets with The Monument available. Daily 9.30am-5.00pm. Adult £9.80; child £4.20. Please check for bridge lift times.