Weems–Botts House Museum is a small historic museum in Dumfries, Virginia, United States. The museum includes the landmark Weems–Botts House on the corner of Duke Street and Cameron Street and the Weems–Botts Museum Annex, which houses the Lee Lansing Research Library and Archive, located at 3944 Cameron Street. Both buildings are located in Merchant Park. The park's bandstand commemorates William Grayson, one of Prince William County's most respected citizens and one of Virginia's first senators. The museum tour showcases the history of Dumfries, Virginia's oldest chartered town, and people associated with the house, including Mason Locke "Parson" Weems, and attorney Benjamin Botts.