Benjamin Thompson House, also known as the Count Rumford Birthplace, located at 90 Elm Street, in the North Woburn area of Woburn, Massachusetts, is the birthplace of scientist and inventor Benjamin Thompson (1753–1814), who became Count Rumford of the Holy Roman Empire as well as Sir Benjamin Thompson of the United Kingdom. It was designated a National Historic Landmark in 1975.


Benjamin Thompson (Jr.), later to become Count Rumford, was born on March 26, 1753, in the west end of this house which had been built by his grandfather, Captain Ebenezer Thompson and in which his parents had lived since their marriage. Young Benjamin's father died on November 7, 1754, and he lived in the house with his grandfather and his mother until she married Josiah Pierce, Jr., of Woburn and he was taken to live in his house.

Current ownership

The birthplace of Benjamin Thompson is now owned by the Rumford Historical Association founded in 1877 to maintain it as a site of historic interest. In its museum are reconstructed models of Count Rumford’s scientific experiments and inventions. A copy of a portrait of Count Rumford by Gainsborough is on display. The house also has a library of Rumford biographies and essays. It is open weekend afternoons 1 - 4:30PM. Admission is free.

Building Activity

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