iFounded in 1791, the Massachusetts Historical Society is the oldest historical society in the United States and an independent research library holding millions of documents, artifacts and works of art on early American, Massachusetts and New England history. Its free exhibition galleries at 1154 Boylston Street rotate selections from those manuscript and art collections, from Adams family papers and Thomas Jefferson correspondence to printings of the Declaration of Independence. The Colonial Revival building, designed by Edmund M. Wheelwright and opened in 1899, is the Society's seventh home. Admission is free and all ages are welcome in the galleries; the reading room is open to researchers by appointment.

Handwritten copies of the Declaration by John Adams and Thomas Jefferson, a rare Dunlap broadside, letters and diaries trace how the document grew from draft to founding text.

Documents and artifacts from the Adams Presidential Library trace how Americans moved from the weak Articles of Confederation through debates over state versus centralized power to a ratified U.S. Constitution.
1154 Boylston Street, Boston, MA 02215, USA
Nearest station: Hynes Convention Center (MBTA Green Line B/C/D) and MBTA bus route 1 (Massachusetts Avenue)
Show on mapClosed 11 November
Closed for Veterans Day
Closed 26 – 28 November
Closed for Thanksgiving weekend (26-28 November 2026)
| Mon | 09:30–16:45 |
| Tue | 09:30–19:45 |
| Wed | 09:30–16:45 |
| Thu | 09:30–16:45 |
| Fri | 09:30–16:45 |
| SatToday | 10:00–15:00 |
| Sun | Closed |
Free
Free and open to the public. All ages are welcome in the galleries; library readers must be at least 16 or accompanied by an adult.
Nationally Registered Landmark building equipped with a wheelchair ramp, interior ramps and a lift, giving step-free access to the reading room, exhibition galleries and other public spaces. The wheelchair ramp is on the right-hand side of the building when facing the front door, beside the accessible street spaces on the Fenway access road.
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