Location: B&O Railroad Museum, West Pratt Street, Baltimore, MD, USA See map: Google Maps American Freedom Tour at B&O Railroad MuseumDates: 09/05/202609/06/202609/07/2026Time: 10 am Location: Colvin Run Mill, Colvin Run Road, Great Falls, VA, USA See map: Google Maps Mill in Motion at Colvin Run MillDates: 09/06/202609/20/2026Time: 12 pm - 2 pm Location: Ellanor C. Lawrence Park, Walney Road, Chantilly, VA, USA See map: Google Maps Women of Walney Walking TourDates: 09/06/202609/20/2026Time: Sign up for 3 p.m. or 4 p.m. Location: B&O Railroad Museum, West Pratt Street, Baltimore, MD, USA See map: Google Maps It’s $10 Admission Day at the B&O!Dates: 09/09/202610/14/202611/11/2026Show more datesHide these dates12/09/2026Time: 10 am - 4 pm Location: National Law Enforcement Museum, 444 E St NW, Washington D.C., DC 20001, United States See map: Google Maps DMV Residents Season PromotionDates: 09/10/202609/11/202609/12/2026Show more datesHide these dates09/17/202609/18/202609/19/202609/24/202609/25/202609/26/202610/01/202610/02/202610/03/202610/08/202610/09/202610/10/202610/15/202610/16/202610/17/202610/22/202610/23/202610/24/202610/29/202610/30/202610/31/202611/05/202611/06/202611/07/202611/12/202611/13/202611/14/202611/19/202611/20/202611/21/202611/27/202611/28/202612/03/202612/04/202612/05/202612/10/202612/11/202612/12/202612/17/202612/18/202612/19/202612/24/202612/26/2026Time: 10:00 am to 5:00 pm Location: The Prince George's County Fair, 14900 Pennsylvania Ave., Upper Marlboro, MD 20772, United States See map: Google Maps 2026 Prince George’s County FairDates: 09/10/202609/11/202609/12/2026Show more datesHide these dates09/13/2026Time: Thursday, Sept 10th 5PM - 10PM Friday, Sept 11th 5PM - 10PM Saturday, Sept 12th 11AM - 10PM Sunday, Sept 13th 11AM - 6PM Location: Smithsonian National Zoological Park, Connecticut Avenue Northwest, Washington, DC, USA See map: Google Maps Qing Bao's Birthday Celebration at Smithsonian's National ZooDates: 09/12/2026Time: 9 am Location: Frying Pan Farm Park, West Ox Road, Herndon, VA, USA See map: Google Maps Exploring our Historic Meeting House and Grounds at Frying Pan Farm ParkDates: 09/13/2026Time: 1 pm - 3 pm Location: Colvin Run Mill, Colvin Run Road, Great Falls, VA, USA See map: Google Maps Grit & Grain - African American Millers at Colvin Run MillDates: 09/13/202609/27/2026Time: 2 pm Location: Ellanor C. Lawrence Park, Walney Road, Chantilly, VA, USA See map: Google Maps Paths of Freedom Seekers at Ellanor C. Lawrence ParkDates: 09/13/202609/27/2026Time: Sign for starting at 3 p.m. or 4 p.m. Location: Anne Arundel County Fairgrounds, Generals Highway, Crownsville, MD 21032, United States See map: Google Maps Anne Arundel County Fair 2026Dates: 09/16/202609/17/202609/18/2026Show more datesHide these dates09/19/202609/20/2026Time: Varies, see website Location: United States Botanic Garden, Maryland Avenue Southwest, Washington, DC, USA See map: Google Maps Summer Evening Hours at U.S. Botanic Garden!Dates: 09/17/2026Time: Conservatory will stay open until 8 pm Location: Manassas, West Street, Manassas, VA, USA See map: Google Maps 50th Edgar Rohr Memorial Car MeetDates: 09/19/2026Time: 8 am - 3 pm Location: H Street FestivalH Street, NE From 4th to 14thWashington, DC, 20002United StatesSee map: Google Maps H Street Festival 2026Dates: 09/19/2026Time: 12:00PM Location: United States Botanic Garden, Maryland Avenue Southwest, Washington, DC, USA See map: Google Maps Kitchen Garden Tasting Table at U.S. Botanic GardenDates: 09/30/2026Time: 11 am - 1 pm Location: George Washington's Mount Vernon, 3200 Mount Vernon Memorial Highway, Mount Vernon, VA 22121, United States See map: Google Maps Slave Memorial Commemoration at Mount VernonDates: 10/04/2026Time: 11 am - 1 pm Location: Annmarie Sculpture Garden & Arts Center, Dowell Road, Solomons, MD, USA See map: Google Maps Food Truck Fridays at Annmarie Sculpture Garden & Arts CenterDates: 10/09/2026Time: 5 pm - 7 pm Location: Colvin Run Mill, Colvin Run Road, Great Falls, VA, USA See map: Google Maps Virginia Hauntings: Legends and Lore at Colvin Run MillDates: 10/23/202610/24/2026Time: Choose a 7 or 7:30 p.m. session
