When I first moved to San Francisco in 2007, I didn't really know what to do in the Presidio. Since that time, this neighborhood and former military fort has become a lot more interesting. A new visitor center opened recently, and it now houses four Andy Goldsworthy's artworks , fantastic restaurants like The Commissary , and other draws like Off the Grid and The Walt Disney Family Museum . A nd then there is hiking... With over 25 miles of trails, The Presidio is quantifiably the best neighborhood for hiking in San Francisco. For this reason in my book, Urban Trails San Francisco , there is an entire chapter on hiking in the Presidio—with seven routes in that neighborhood alone. And while following one of the Presidio's trails is great, sometimes it's nice to create loops that combine a number of different trails. In the spirit of creating new hikes, here are two great loops that start and end right in the Presidio Main Post. For...