Fort Belvoir is a military installation located in Fairfax County, Virginia. The climate in this region is humid subtropical with hot summers and mild winters. The Potomac River flows along the eastern side of the installation, which contributes to the hydrology constituents of the area. Outdoor recreation opportunities include hiking, fishing, boating, and camping. The installation has several parks and recreational areas, including the Accotink Bay Wildlife Refuge, the Gunston Cove Park, and the Laurel Hill Golf Club. The installation also has a fitness center, swimming pools, and a marina for water-based activities.