The "Square Mile" refers to the City of London, a small area that serves as the financial district of the capital. It is known for its historic buildings, including St. Paul's Cathedral and the Bank of England, as well as modern skyscrapers like the Shard. The Square Mile is home to many banks, financial institutions, and businesses, making it a global financial hub. Despite its small size, the Square Mile has a rich history dating back to Roman times. It operates under its own local authority, the City of London Corporation, which manages various services and regulations. The area is also famous for its vibrant culture, including restaurants, shops, and art galleries.