The Blue Ball Barn serves as the park visitor's center and headquarters.
The Delaware Folk Art Collection is on permanent exhibit within the barn, and it houses over 120 works by 50 local artists meant to highlight the state's diverse artistic heritage.
The first floor contains exhibits about the area's agricultural history and the development of dairy technology.
The barn contains conference and meeting rooms that can be rented out.

The barn was developed into part of the park as part of the state's efforts to reuse historic structures.
The building was built in 1914 by Alfred I. du Pont as a state-of-the-art dairy barn.
The dairy barn and surrounding farm complex were used to provide food for the Nemours estate from 1914 until 1943.
From 1943 through 1977, the barn and farmland was leased out to a family of independent operators who sold the dairy produce externally.
After 1977, most of the surrounding farm buildings were demolished.
The barn was one of the few remaining structures.

The Blue Ball Barn had been named after a tavern that dated back to the late 18th century which had been located near the barn.
In front of the tavern was a pole with a large blue ball that could be raised or lowered.
If the ball was on top of the pole, that served as a signal to illiterate stagecoach drivers that there were passengers which needed to be picked up.
If the ball was lowered, the stagecoach would pass by.
The Blue Ball Barn serves as the park visitor's center and headquarters. The Delaware Folk Art Collection is on permanent exhibit within the barn, and it houses over 120 works by 50 local artists meant to highlight the state's diverse artistic heritage. The first floor contains exhibits about the area's agricultural history and the development of dairy technology. The barn contains conference and meeting rooms that can be rented out.
The barn was developed into part of the park as part of the state's efforts to reuse historic structures. The building was built in 1914 by Alfred I. du Pont as a state-of-the-art dairy barn. The dairy barn and surrounding farm complex were used to provide food for the Nemours estate from 1914 until 1943. From 1943 through 1977, the barn and farmland was leased out to a family of independent operators who sold the dairy produce externally. After 1977, most of the surrounding farm buildings were demolished. The barn was one of the few remaining structures.
The Blue Ball Barn had been named after a tavern that dated back to the late 18th century which had been located near the barn. In front of the tavern was a pole with a large blue ball that could be raised or lowered. If the ball was on top of the pole, that served as a signal to illiterate stagecoach drivers that there were passengers which needed to be picked up. If the ball was lowered, the stagecoach would pass by.
Alapocas Run State Park