伦敦双子桥位于英国伦敦东部，是从泰晤士河口算起连接伦敦南北区的第一座桥,是连接伦敦南北城区的要道，也是伦敦的象征，享有“伦敦正门”的美誉。因桥身为四座塔楼连接而成，故而也有“伦敦塔桥”一称。
双子桥动工于1886年，造型独特而雄伟，采用哥特式的建筑风格，与不远处的伦敦塔相协调。它全长244米，两侧各有一座桥塔，每个塔高65米。桥塔和桥身的钢铁骨架外铺设花岗岩和波特兰石来保护骨架和增加美观。设计师霍拉斯·琼斯为了适应路面和航运双方面的需求，将桥身中部设计为可以开合的两扇，每扇可以竖起到83度来让来往船只通过。
Tower Bridge is a combined bascule and suspension bridge in London, England over the River Thames.It is close to the Tower of London,which gives it its name.It has become an iconic symbol of London.Tower Bridge is one of several London bridges owned and maintained by the City Bridge Trust, a charitable trust overseen by the City of London Corporation.
The bridge is 800 feet (244m) in length with two towers each 213 feet (65m) high, built on piers. The central span of 200 feet (61m) between the towers is split into two equal bascules or leaves, which can be raised to an angle of 83 degrees to allow river traffic to pass. The bascules, weighing over 1,000 tons each, are counterbalanced to minimize the force required and allow raising in five minutes.
