Fort Western was a colonial outpost at the head of navigation on the Kennebec River at modern Augusta, Maine, United States.It was built in 1754 by a Boston land company (the Kennebec Proprietors) to promote settlement in the area. The fort was a log palisade with blockhouses which protected a store and warehouse. It was never directly attacked. From a high elevation a large rectangular enclosure commanded the river for more than a mile. Blockhouses 24 feet square and watch-boxes 12 feet square guarded opposite corners, and within stood a two-story main house 100 feet by 32 feet.