Postman's Park is a park in central London, a short distance north of St Paul's Cathedral. Bordered by Little Britain, Aldersgate Street, St. Martin's Le Grand, King Edward Street, and the site of the former headquarters of the General Post Office (GPO), it is one of the largest parks in the City of London, the walled city which gives its name to modern London. Its name reflects its popularity amongst workers from the nearby GPO's headquarters.