[12] The Glen features more than twenty miles of publicly accessible trails and includes 2.5 miles of the National Scenic Little Miami River, regionally significant stands of old-growth forest, a distinct rock column known as Pompeii's Pillar, ecologically reclaimed farm land, the Orators Mound (a Adena burial mound), and the Yellow Spring, for which the town is named.

[20] While GHA got funding for the upfront payment from existing proceeds in a term endowment fund, it began major fundraising to rehire staff, reopen the Glen, restart educational programs, replenish the Glen's endowments, and address deferred maintenance on buildings and grounds.

[23] The Vernet Ecological Center, named for Sergius Vernet who invented the wax thermostatic element, is located on the western edge of The Glen and houses an auditorium, complete with a stage, video projection and sound system, that seats up to 140 (or 80 with tables);[24] a patio;[24] a Nature Shop;[25] offices; and, the Atrium Gallery which exhibits contemporary art by local and regional artists.

[26] The building, with its unique curved limestone walls and vertical lines of rough-hewn yellow pine, was built in 1973,[27] but was rededicated in late 2012 after significant upgrades including an energy-efficient geothermal heating and cooling system and an insulated cork floor.

[31] The physical facilities include the Outdoor Education Center Lodge which has a Cafeteria-style dining room suitable for up to 120 people, and three Dormitories each sleeping 36–40.

However, when Antioch College President James Dixon lived there, he added additional rooms, bringing the total up to 18.

[36] The Riding Centre, a therapeutic equestrian facility, is physically located on land leased from Glen Helen, but is operated separately.