The Gordon-Lee Mansion is an antebellum plantation house, set on 7 acres, furnished in the atmosphere of early Southern aristocracy. This is the only structure left standing that was used by both armies during the Battle of Chickamauga.  The house served as Union headquarters before, seven division hospitals during and a Confederate hospital after the battle.

It is now a common venue for weddings and other events.

http://leeandgordonsmills.com/the-mansion/