NATURE in the City In San Francisco, you don’t need to leave city limits to explore the great outdoors. PRESIDIO OF SAN FRANCISCO For picturesque views, visit the sprawling Presidio, a national park site that sits at the entrance of the Golden Gate. A former military outpost, the area has been repurposed as public land with an abundance of trails, lookouts and parks — like Tunnel Tops , a 14-acre green space built atop Highway 101. TIP: Walk the Wood Line , a 1,200-foot installation by artist Andy Goldsworthy made entirely of eucalyptus branches. CRISSY FIELD Tunnel Tops connects the Main Parade Lawn of the Presidio to Crissy Field, a promenade with stunning views of the bridge and bay. This former airfield contains beaches, tidal wetlands and a waterfront trail that is well-loved by runners and cyclists. TIP: On breezy days, expect to see many kitesurfers out on the water at East Beach. BAKER BEACH On the Presidio’s western edge, Baker Beach is a ruggedly beautiful stretch of sand that’s one of the city’s best-kept secrets. Big waves and strong currents make swimming unsafe, but it’s a wonderful place to picnic and spot wildlife; porpoises and harbor seals can often be seen frolicking in the water. TIP: The northern end of Baker Beach is clothing optional, so don’t be surprised if you spot a few sunbathers lounging au naturel . Nature in the City SF Travel Wood Line . 43