Trafalgar Square is a public square named after the Battle of Trafalgar. Established in the early 19th century, it features Nelson's Column at its centre, surrounded by fountains and statues. The square is known for hosting community gatherings, political demonstrations, and annual celebrations like New Year's Eve. It also houses prominent buildings such as the National Gallery and St Martin-in-the-Fields Church. With its rich history and iconic landmarks, Trafalgar Square remains a popular destination for tourists.