Oak Spring Farm is a historic farm located in Rockbridge County, Virginia, near the community of Steeles Tavern. The farm's oldest building, its I-house style farmhouse, was built in 1826 by William Moore. The name of the farm came from a nearby spring originally used by Native American hunters. In 1845, Uriah Fultz purchased the farm; he later gave it to his brother Isaac, who opened a blacksmith shop on the property. In 1860, a two-story horizontal plank addition was placed on the house. The farm's bank barn, added in 1878 is one of the largest in the United States; it replaced the previous barn, which had been destroyed in the Civil War.