Established around 1758, the Clyde Blockhouse provided refuge from hostile forces for settlers and travelers during the French and Indian War. The fort was designed as a two-story log building, with the upper level extending outward over the lower one on all sides. This design featured gun ports along the overhanging section, allowing defenders to fire upon any attackers attempting to breach the lower level.

During the Revolutionary War, the fort functioned as a depot for the storage of goods smuggled between Canada and the colonies. After the war, it continued to be utilized by smugglers for transporting contraband from Canada. In 1788, the government intervened, dispatching Sheriff William Colbraith of Herkimer County along with State Militia troops to expel the smugglers and squatters, which ultimately led to the destruction of the blockhouse by fire.

The replica that stands today was constructed in 1975 to commemorate the United States’ bicentennial. This modern version serves as a reminder of the fort’s historical significance and the tumultuous times it witnessed.