The Haan Museum rests on five acres near downtown Lafayette, which includes a three acre woods behind the mansion. The nature trail starts at the edge of the woods and winds down to the bottom of the property at Valley Street before returning to the top by another route. Thirty different species of trees native to Indiana are identified with educational signs. Other signs are written about non-native and invasive species, fruits of different trees, and other subjects.
The upper part of the trail is a little too difficult to be called easy, and some agility is required as it passes over rocks, inclines, and narrow paths. The lower part of the trail is more rugged and requires better conditioning. The loop trail is about a mile long and feels very much like a wilderness experience in the middle of town.