What is the Tower Bridge and why is it significant?

Tower Bridge is a suspension bridge that crosses the River Thames in London, England. It was built between 1886 and 1894 and is one of the most recognizable landmarks in London. The bridge is located close to the Tower of London, which is how it got its name.

Tower Bridge is significant for several reasons. First, it was the first bridge in London to be built with a steel framework, which made it much stronger than previous bridges. Second, it was designed with two towers that are connected by a walkway, allowing pedestrians to cross even when the bridge is open. Third, it has a distinctive design that sets it apart from other bridges in London, with its Gothic-style towers and blue color.

Today, Tower Bridge is a popular tourist attraction that offers spectacular views of the River Thames and the city of London. Visitors can also explore the bridge's engine rooms and learn about the history of the bridge and the river.