For a memorable 3-day city break in the United Kingdom, consider visiting London. Explore iconic landmarks like the Tower of London and Buckingham Palace, enjoy world-class museums such as the British Museum, and indulge in diverse dining experiences. Alternatively, head to Edinburgh for its historic charm, discover the majestic Edinburgh Castle, stroll along the Royal Mile, and explore the beautiful Arthur’s Seat. Both cities offer a mix of culture, history, and entertainment, perfect for a short getaway.