London Bridge has a long history of crossings over the River Thames in central London. The current bridge, built in 1973, replaced a 19th-century stone-arched structure and a medieval stone-built bridge. It is owned by Bridge House Estates and carries the A3 road. London Bridge has been an iconic landmark depicted in art, literature, and songs, including the nursery rhyme "London Bridge Is Falling Down." Its location at the western end of the Pool of London makes it a significant part of the city's landscape.