Blyth Battery is a coastal artillery fort located in Blyth, Northumberland, England. Built during World War II, it was part of the UK's defense system against potential naval attacks. The battery features several gun emplacements and observation posts, designed to protect the nearby port and industrial areas. Today, Blyth Battery is a historical site that attracts visitors interested in military history. It is preserved by local heritage groups and offers educational tours, showcasing the strategic importance of coastal defenses during wartime. The site also provides scenic views of the surrounding coastline and the North Sea.