The Pyramids are three pyramid-shaped office buildings that are part of 200 arce a commercial development in College Park, Indianapolis, Indiana. The structures occupy 45 acres (180,000 m2) of land situated on a 25-acre (100,000 m2) lake. Each pyramids has three cable passenger elevators. The Art Institute of Indianapolis is also located at the Pyramids. The radical design of the Pyramids have made the buildings architectural landmarks on the northwest side of Indianapolis. All three towers are connected via basement and ground level corridors. The elevator and mechanical cores form two walls of the structure, eliminating the need for internal supports and resulting in column-free work floors.