The George C. Hammer Amphitheatre is a small amphitheater in Montclair Park near the recreation center. It was built in 1961, and named for Oakland Parks and Recreation employee and long-time head of Camp Chabot, George C. Hammer, following his untimely death.
The amphitheater was financed by a $5,500 gift from the Lions Club of Montclair, and a $2,500 allocation from Oakland Parks and Recreation. The Hillside Gardeners of Montclair donated $800 for landscaping. The amphitheater was dedicated June 3, 1962.