Harwich's Town's importance as a port is a result of its location; protruding out into the estuary of the rivers Orwell and Stour, it commands the only safe anchorage between the Thames and the Humber. Harwich is famous for is sea-faring history and heritage; once used as the base for English fleets in 14th and 15th centuries, then later as the Headquarters of the King's Navy. Harwich has strong connections with the Pilgrim Fathers who travelled to America in 1620. It was here that the Mayflower ship was built and was home to Master Christopher Jones, who's originally Elizabethan House, rebuilt in 17th Century can still be seen. Visitors can follow the Maritime Trail taking in the Ha'penny Visitor Centre and its Mayflower exhibition, Grade One listed Guildhall, lifeboat museum and the restored Napoleonic Redoubt Fort.