• Learn to say 'no' to the good so you can say 'yes' to the best. John C. Maxwell

See the Secret Sidewalk



The old Niles Canyon Aqueduct in the San Francisco Bay Area now acts as a bemusing and secret trail through nature for wayward travelers.

Where there is something strange and secluded, the strange and secluded will gather. In no other place does that hold true like abandoned-yet-safe former public works structures. In the East Bay parklands of the San Francisco Bay Area, one such magnet for the curious and the mischievous is a trail enchantingly known as The Secret Sidewalk.

Not a sidewalk at all but rather the top of the Niles Canyon Aqueduct – a half-buried concrete tunnel running all the way from Alameda Creek in the East Bay to San Francisco – the aqueduct ran through the similarly enchanting Sunol Filter Temple and helped provide fresh water for the city.

Today, the aqueduct isn’t good for much except as a bemusing trail to visit and hike along, walking through the open spaces of parkland on a readymade sidewalk of sorts. The surrounding area is otherwise untouched by civilization, owned by the local government and walled off behind “no trespassing” signs. This leads to the aforementioned utility of the Secret Sidewalk as a gathering place for graffiti artists and teenage parties, able to sneak in and enjoy the pleasant seclusion of a secret place only they know about.

Bay Area officials have considered repurposing the aqueduct or even putting it back into use as a solution to the growing mischief surrounding the area, but thus far no plans have been carried out.

In the mean time, the Secret Sidewalk’s legend will likely continue to grow, passed along by word of mouth from person to curious person. As a meeting ground. As a secluded lover’s lane. As a safe and quiet place to be where you’re not supposed to be. It’s only appropriate – after all, the aqueduct’s original purpose was to deliver water to places it wasn’t meant to be. Now it delivers urban explorers and legends in the same way.

Know Before You Go

To get there you take Old Canyon Road, to the right of the river, down to the dead end, where there is a gate marked San Francisco Water Dept - No Trespassing. Follow the gravel road for about 1/4 mile, then climb up the embankment to the right, over the train tracks, and up to a little hill with a trestle. There is a rope swing hanging from it. Climb up the left side of the trestle, and you will find the sidewalk.