Historical Marker
Thermo-Con House
Historical marker location:
5909 21st St, Fort Belvoir, Virginia
( Marker is on Gunston Road south of 21st Street, on the left when traveling south.)
The first slave ship to arrive in the American colonies landed in Virginia in 1619. Virginia became a center of the transatlantic slave trade, and by 1860, Virginia had the largest population of enslaved people in the United States.