The Westminster Bridge is the oldest bridge crossing the Thames in central London. The current Westminster Bridge was built in the 1860s by Charles Barry, the architect who built the Palace of Westminster, and with its Victorian Gothic adornments, it forms as a perfect stylistic echo and extension. Even its distinctive green colour is intended to reference the green leather seats of the House of Commons. Meanwhile, Lambeth Bridge, across from the House of Lords, is painted to match their red leather benches.
Today the bridge has a darker resonance, following the 2017 terrorist attack in which three civilians and one police officer were killed, along with the attacker, with fifty further injuries.