The Old State Bank Building is a historic landmark located in Decatur, Morgan County. It was built in 1833, originally serving as the Decatur branch of the State Bank of Alabama. Now operating as a museum, the building is notable for its Jeffersonian-style architecture featuring a rare five-column design and two sets of double front doors. It is believed to be the oldest surviving bank building in the state of Alabama. The Old State Bank was added to the National Register of Historic Places in 1972.

The building remained vacant until 1861, when it was occupied by Union troops in the area. It served as a field hospital, a storehouse, and a headquarters for the senior officers. With 22-inch-thick walls, the bank's vault provided shelter from bullets, mortars, and cannon fire, which allowed it to be used as an operating room for wounded Union soldiers. The Bank's columns still bear the scars left by cannonballs and bullets, as well as the carved initials and troop numbers of Union soldiers. Because of the bank's importance to the Union, it was one of only three buildings in Decatur that survived the Civil War.

Exhibits in the museum include three teller cages built in 1833, currency issued from the bank, numerous maps and photographs, and other artifacts that tell the history of the Bank. The second floor of the building is the preserved residence of Washington Keyes, the bank's first manager. As Decatur was located on the frontier, the Alabama General Assembly required Keyes to live above the bank to provide security. The dining room, formal parlor, and bedroom are each restored as they would have looked when Keyes resided there.
The Old State Bank is located at 952 Bank Street Northeast, in Decatur. It is open Monday through Friday, from 9am to 5pm.
Additional Resources
Dunnavant, Robert. Decatur, Alabama: Yankee Foothold in Dixie, 1861-1865. Little Rock: Pea Ridge Press, 1995.
Additional Resources
Dunnavant, Robert. Decatur, Alabama: Yankee Foothold in Dixie, 1861-1865. Little Rock: Pea Ridge Press, 1995.
Gamble, Robert. Historic Architecture in Alabama: A Guide to Styles and Types, 1810-1930. Tuscaloosa: University of Alabama Press, 1990.