Tennessee Valley, California

"The Tennessee Valley is in the same direction as Muir Beach (over the Golden Gate bridge and along Highway 101), and its' encyclopedic list of hiking trails is another excellent way to explore the Golden Gate Recreation area. Advanced hikers can explore the hills around the valley while beginners and families can take the almost two-mile trek to a little cove—locals know it's best to time a hike with the low tide when you can actually see the shipwrecked engine of the SS Tennessee, which sunk near the beach in 1853. In the spring, the valley is home to gorgeous wildflowers, including buttercups and poppies, and in the summer and through early fall you can find fruit on the blackberry bushes. Remember: No dogs allowed. "