Collection of old artillery, and telling the story of the World War I German navy bombardment of Hartlepool.
Museum recreating life in a Georgian harbour. The standout exhibit is HMS Trincomalee, the oldest Royal Navy warship still afloat (HMS Victory is older, but is in dry dock). Trincomalee was a frigate, launched in Bombay in 1817 and brought to Portsmouth, but then mothballed until 1845. She thereafter served around North America, including anti-slavery patrols. (Her sister ship HMS Unicorn, mothballed from launch and never in service, can be visited in Dundee). Somewhat anachronistic is the paddle steamer Wingfield Castle, a Humber ferry from 1934 to 1974 when the A15 Humber Bridge was completed. The National Museum of the RN is an umbrella organisation with other exhibits at Belfast, Portsmouth, Ilchester and Gosport.
This Anglican church dates from the 12th century, overlying the former Hartlepool or Heretu Abbey founded in 640. Saint Hilda (614-680) was its second abbess and went on to found Whitby Abbey; Hartlepool Abbey disappears from history when she moved on, and it's not clear if it was abandoned or simply unimportant.