Fort Halifax State Historic Site
Maine’s Oldest Blockhouse — 1754 French & Indian War Fort at Kennebec-Sebasticook Confluence, Oldest Surviving Original Wooden Blockhouse in America, Winslow Waterfront
Fort Halifax State Historic Site is a state historic site in Winslow, Kennebec County, Maine, at the confluence of the Kennebec and Sebasticook Rivers. The site preserves the oldest surviving original wooden blockhouse in America — built in 1754 during the French and Indian War by Massachusetts Governor William Shirley to defend against French and Native attacks on the Kennebec frontier — with interpretive signage, a waterfront park, picnic area, and scenic river views.
Fort Halifax’s 1754 blockhouse holds an extraordinary distinction — it is the oldest surviving original wooden blockhouse in the United States. Built by order of Massachusetts Governor William Shirley during the French and Indian War, the fort guarded the strategically vital confluence of the Kennebec and Sebasticook Rivers. It served as a northern outpost protecting English settlements from French and Abenaki attacks. When the 1987 flood swept the blockhouse downstream, volunteers recovered the original timbers from the Kennebec River and meticulously reconstructed the structure using the same 18th-century logs. Today the blockhouse stands in a riverside park at the scenic two-river confluence.
Things to Do
Historic Site
- 1754 blockhouse — oldest original in America
- Interpretive signage
- French & Indian War history
- 1987 flood recovery story
Waterfront Park
- Kennebec + Sebasticook confluence views
- Picnic area
- Photography
- Walking paths
Park Information
| Feature | Details |
|---|---|
| Location | Winslow, ME — Kennebec/Sebasticook confluence |
| Built | 1754 — French & Indian War |
| Distinction | OLDEST original wooden blockhouse in America |
| Builder | Gov. William Shirley (Massachusetts) |
| Purpose | Northern defense against French/Abenaki |
| 1987 Flood | Swept away → original timbers recovered + rebuilt |
| Season | Year-round (exterior); check for interior hours |
| Admission | FREE |
| Facilities | Picnic area, parking, paths |
| Camping | NOT available |
| Coordinates | 44.5517° N, 69.6258° W |
Best Time to Visit
| Season | Highlights | Considerations |
|---|---|---|
| Summer (Jun–Aug) | ⭐ BEST: Full access; river views; picnicking; long days; combine with Waterville | Popular; warm |
| Fall (Sep–Oct) | Foliage at river confluence; dramatic light; photography; quiet | Cooler; shorter days |
| Spring (Apr–May) | Snowmelt rivers; birding; quiet; green-up | Muddy; river may be high |
| Winter (Nov–Mar) | Snow-covered blockhouse; solitude; open year-round | Cold; no winter maintenance; ice |
Visitor Tips
- OLDEST in America: Fort Halifax’s blockhouse is the oldest surviving original wooden blockhouse in the United States — built in 1754 with original 18th-century logs.
- Flood miracle: The 1987 flood swept the blockhouse into the Kennebec River — volunteers recovered the original timbers and painstakingly rebuilt it.
- Two rivers: The site overlooks the scenic confluence of the Kennebec and Sebasticook Rivers — beautiful at all seasons.
- Free: No admission fee — the exterior and park are accessible year-round.
- Combine: Just across the river from Waterville — combine with Colby College campus and downtown dining.
Frequently Asked Questions
What is the oldest blockhouse in America?
Fort Halifax State Historic Site in Winslow, Maine, preserves the oldest surviving original wooden blockhouse in the United States, built in 1754 during the French and Indian War. It guards the confluence of the Kennebec and Sebasticook Rivers. In 1987, a flood swept the blockhouse downstream, but volunteers recovered the original 18th-century timbers and rebuilt the structure. The site is free and includes a waterfront park with picnic area and river views.
Last updated: May 2026
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