I went to Black Jack Battlefield a few weekends ago and actually went down a couple of the trails established so it could also be a nature park. Along the trail to Black Jack Prairie was an old barn and an old silo. I got a picture of both although I thought the silo came out better.
Black Jack Battlefield is an amazing and I highly recommend it if you ever get a chance to go see it. Aside from being home to what is considered the first battle of the Civil War, it also has remnants from the Santa Fe Trail, the town of Black Jack and the Robert Hall Pearson House which was built in the 1880s.
For more information about Black Jack, visit: www.blackjackbattlefield.org.