Designed by Thomas Phifer and Partners, the Pavilions opened to the public in 2018 with 50,000 square feet of exhibition space. The building is LEED certified gold and has 11 Rooms for artwork installations. Each Room is unique in its proportions; some host changing exhibitions while others are purpose-built to house a particular artist’s work. The rooms are connected by a glass-enclosed passage that looks out onto an 18,000 square foot water court home to seasonally changing plant life.

"Natural light is considered a material in its own right: rooms were placed deliberately on the cardinal points to highlight the movement of the sun’s daily passage...In moving through the various rooms and the glass-enclosed circulation path, light dissolves the barrier between outside and inside, between nature and architecture." –Thomas Phifer and Partners

Sited along the Woodland Trail, this 4,000-square-foot concrete structure was designed by Thomas Phifer of Thomas Phifer and Partners, in collaboration with the artist Richard Serra and opened in the summer of 2022. The building houses Serra's Four Rounds: Equal Weight, Unequal Measure, 2017, a sculpture composed of four cylindrical forms forged from steel, each weighing 82 tons—the heaviest form that a foundry is able to forge—but ranging in height and diameter. The work is housed inside an unadorned structure made of cast-in-place concrete that visitors approach along a winding boardwalk.

Four Rounds is open Thursday – Sunday, 11 a.m. – 4:30 p.m.

Located steps from the Pavilions, the Café is an LEED gold building designed by architect Thomas Phifer. With its warm wooden interior, communal dining tables, and enormous window framing a view of the woods, the Café welcomes visitors to convene and rest while dining on a seasonal menu of locally sourced food. The Café's flower arrangements are cut weekly from Glenstone’s landscape and placed in handmade ceramics by artisan Eric Bonnin.

The Environmental Center at Glenstone is a dynamic, multiuse maintenance and education facility offering hands-on, experiential learning. The building is located northwest of the Arrival Hall and is publicly accessible by the pathway near the Red Grove parking lot. Though tours and classes may be scheduled in advance, all visitors to Glenstone are welcome to explore the facility during open hours. Visitors can discover information about Glenstone's robust on-site composting, natural landscape management, waste reduction, materials recycling, and water conservation at the center.