New Tavern Fort in Gravesend is an exceptionally well-preserved example of 18th-century artillery fortification, built around 1780-83 as part of Britain's Thames defence strategy against potential French invasion. The fort's strategic location allowed it to provide crucial cross-fire with Tilbury Fort on the opposite riverbank, forming a defensive network protecting London's approaches. Its massive underground magazine complex features restored ammunition storage chambers and exhibits documenting Gravesend's experience during World War II aerial bombardment, including authentic bomb shelters. The fort was also notably connected to General Gordon of Khartoum, who was stationed there and initiated local ragged schools. Today, New Tavern Fort and its meticulously restored underground facilities are open to the public during summer weekends, offering visitors an rare glimpse into 18th-century military engineering and wartime civilian experience.