The 200ft high bluffs on the most western edge of San Francisco, Fort Funston is one of the premier hang-gliding spots in the country. The network of trails make it ideal for hiking & even horseback riding.
There's a great walking trail down to the beach below, but it's a somewhat strenuous climb back up.
Most San Franciscan's who have dogs know that this is one of the best place to bring Fido to run, walk and play with other dogs.
Lastly, from the observation deck, you can sit and watch the handgliders zoom by or just take in the amazing view of the ocean.