Broadmoor is a gated residential community of 85 acres (340,000 m²) and golf course of 115 acres (465,000 m²) in Seattle, Washington, USA. It is bounded on the west by the Washington Park Arboretum, on the south by E. Madison Street, beyond which is the Washington Park neighborhood, on the east by 37th Avenue E., beyond which is the Madison Park neighborhood, and on the north by Union Bay marshland.