Baltimore Beach Volleyball, 300 Key Ave, Baltimore, MD 21230, US

This Mount Washington Aquatic center is most famously known as the home training center for local Olympian Michael Phelps, and the impressive facility lives up to its high profile. The star of Meadowbrook is the 1 million gallon outdoor pool, but members also have access to indoor lap pools, a therapy pool, an expansive children's pool with fountains, and a hot tub. Membership also includes use of the exercise rooms, which offer weight training, cardio machines and a cycling area. In the seasonable months, members are encourages to play a game of tennis, or just enjoy a picnic lunch under one of the outdoor pavilions.