Dumbarton House Museum is reopening! 

We will be open to museum and NSCDA members only July 1 and July 2. We will be closed July 3-5 for the holiday weekend and open fully to the public on July 7! Timed tickets and masks will be required. Visit our admissions page for full details.

About Dumbarton House

Dumbarton House stood witness to the birth of the American Republic as the government settled into the newly established Federal City. Built in 1799, on the heights of Georgetown, Dumbarton House was the home of the first Register of the U.S. Treasury, Joseph Nourse, who resided here with his family and servants — free, indentured, and enslaved — from 1804-1813. Dumbarton House’s period room and rotating exhibitions the stories of the early city of Washington and offers visitors a view of what life was like in the earliest days of our Nation’s Capital.

In 1928, The National Society of The Colonial Dames of America (NSCDA) purchased the property as its national headquarters an opened the museum to the public four years later. As the headquarters of the NSCDA, Dumbarton House shares the stories of women in preservation. The NSCDA, through its Corporate Societies, owns, maintains, or supports over 80 historic sites and collections around the country.

Get to Know Dumbarton House

Explore inside Dumbarton House with our new virtual tour.

Review out our latest Annual Report with an overview of our activities and achievements in 2019.


The perfect setting for your special event.

Dumbarton House offers a setting that is stately, charming, and elegant for private events ranging from corporate luncheons, meetings and conferences to wedding ceremonies and receptions, garden and tea parties. See Our Event Brochure