Tree Trails The Red Flowering Horse Chestnut (Aesculus x carnea) is found on the Memorial Union Trail. There are three self-guided walks designed to highlight the diversity of trees on campus. QR codes are on each tree label to help smartphone users connect to online information about that tree. The Jesse Hall Tree Trail has 48 trees and is a .93 mile walk taking about 60 minutes. The Lowry Mall Tree Trail has 27 trees and is a .61 mile walk taking about 30 minutes. The Memorial Union Tree Trail has 37 trees and is .61 miles long taking about 35 minutes.