Longfellow House–Washington’s Headquarters National Historic Site

Longfellow House–Washington's Headquarters National Historic Site is a Georgian house in Cambridge, Massachusetts. Built in 1759, and is a National Historic Landmark. It is owned by National Park Service.

Location: 105 Brattle Street, Cambridge, Massachusetts, United States

Verified facts

• Located in Cambridge
  confidence 75/100 · 3 independent sources · SRC-1454, SRC-1455, SRC-1456, SRC-3761
• Built in 1759
  confidence 75/100 · 3 independent sources · SRC-1457, SRC-1455, SRC-1456, SRC-3761
• Architectural style: Georgian
  confidence 75/100 · 3 independent sources · SRC-1457, SRC-1456, SRC-3366
• Historic designation: National Historic Landmark; National Historic Site; National Register of Historic Places
  confidence 75/100 · 3 independent sources · SRC-1455, SRC-1456, SRC-3367
• Owned by National Park Service
  confidence 95/100 · 6 independent sources · SRC-1456, SRC-1455, SRC-3367, SRC-6198, SRC-6199, SRC-10168

Evidence & sources

• SRC-10099 — Cambridge Office for Tourism — Longfellow House–Washington's Headquarters NHS (Tier 2, reference; retrieved June 2026)
• SRC-10168 — Longfellow House-Washington's Headquarters, historic site for 50 years — Cambridge Day (Tier 2, reference; retrieved June 2026)
• SRC-1454 — National Park Service — Longfellow House Washington's Headquarters National Historic Site (park home page) (Tier 1, official_archive; retrieved June 2026)
• SRC-1455 — National Park Service — Longfellow House – Washington's Headquarters (Places listing) (Tier 1, official_archive; retrieved June 2026)
• SRC-1456 — Wikipedia — Longfellow House–Washington's Headquarters National Historic Site (Tier 3, encyclopedia; retrieved June 2026)
• SRC-1457 — National Park Service — Longfellow House Washington's Headquarters NHS, Architecture (Tier 1, official_archive; retrieved June 2026)
• SRC-3366 — History Cambridge — Vassall-Craigie-Longfellow House (Tier 2, historical_society; retrieved June 2026)
• SRC-3367 — The Cultural Landscape Foundation — Longfellow House-Washington's Headquarters National Historic Site (Tier 2, heritage_organization; retrieved June 2026)
• SRC-3761 — britannica.com (Tier 2, journalism; retrieved June 2026)
• SRC-5451 — Directions — Longfellow House Washington's Headquarters NHS (National Park Service) (Tier 1, official_government; retrieved June 2026)
• SRC-5452 — Longfellow House–Washington's Headquarters National Historic Site — Wikipedia (Tier 2, encyclopedia; retrieved June 2026)
• SRC-6198 — NPPlan — Longfellow House-Washington's Headquarters NHS House History (Tier 3, national-parks-reference; retrieved June 2026)
• SRC-6199 — CultureNow — Longfellow House – Washington's Headquarters National Historic Site (Tier 3, cultural-heritage-nonprofit; retrieved June 2026)

How we verify

Every fact above is independently corroborated by at least two reputable sources and
confidence-scored before publication. Claims that cannot clear that bar are withheld. We show the
street address only for non-residential public landmarks (museums, commercial and civic buildings,
publicly documented filming-location sites); the exact addresses of private residences and any
personal information are structurally barred from publication. Last reviewed June 2026.

Frequently asked questions

Can you visit Longfellow House–Washington’s Headquarters National Historic Site?

Yes — Longfellow House–Washington’s Headquarters National Historic Site is open to the public. Hours: Seasonal: house tours typically late May-Oct 31, Fri-Mon. Standard tours hourly 10am-4pm; grounds open year-round. Check NPS site for current dates. Admission: Free; free ticket required for house tours. Day-of phone reservations from 9:30am (617-876-4491); walk-ins welcome.

Where is Longfellow House–Washington’s Headquarters National Historic Site located?

Longfellow House–Washington’s Headquarters National Historic Site is located in Cambridge, Massachusetts.