Trafalgar Square, located in Central London, is a public square named after the Battle of Trafalgar. It's got Nelson's Column smack dab in the middle, surrounded by cool fountains and four lion statues. The place is packed with history, from the King's Mews to the National Gallery. You can catch a tube at Charing Cross station nearby or hop on a bus passing through. Plus, it's the official center of London, so you know it's a big deal!