Washington is the county seat of Wilkes County, Georgia, United States. Under its original name, Heard's Fort, it was for a brief time during th…Washington is the county seat of Wilkes County, Georgia, United States. Under its original name, Heard's Fort, it was for a brief time during the American Revolutionary War the Georgia state capital. It is noteworthy as the place where the Confederacy voted to dissolve itself, effectively ending the American Civil War.