Tower Bridge opens up to allow a boat to pass up the Thames. The bascule bridge (the word ‘bascule’ is taken from the French for ‘see-saw’) was completed in 1894 and was built to cater for East End traffic while minimising disruption to boats moving up and down the rive. It was the first bridge built to the east of London Bridge (a bridge which many often confuse it with!). For more information, see www.towerbridge.org.uk.