An oasis of green in busy Washington, DC, Rock Creek Park is an expansive natural oasis in the middle of the city preserving the Rock Creek Valley. The park has many public facilities, including an outdoor concert and theater venue, a tennis stadium, a planetarium, a nature center, paved bicycle paths, and foot and horse trails along the creek and through the woodland. The park has an equestrian center that offers horseback riding lessons and guided trail rides. There is also a boat center that rents bikes, kayaks, canoes, sailboats and rowing shells. The park also provides a haven for birds and other urban wildlife.