Octagon BuildingOctagon Building can refer to:Octagon barn (disambiguation)Octagon CentreOctagon Chapel (disambiguation)Octagonal churches in NorwayOctagon HallOctagon HotelOctagon House (disambiguation)Octagonal MausoleumOctagonal Schoolhouse (disambiguation)Octagon TheatreThe Octagon (disambiguation)List of octagonal buildings and structuresSource: Wikipedia — Octagon Building (CC BY-SA 4.0)