An anonymous art project beneath Longfellow Bridge where hundreds of trophies line the steel support beams.

A three-piece musical sculpture installed between the subway tracks at Kendall Station near MIT.

One of the last remaining movie theatres in the country that features a rear-projection system.

This nearly endless university hallway is home to a unique sunset known as "MIThenge."

This tiny, painted door at the base of a tree stump has been a fixture of the Harvard University campus for decades.

The thousands of shades on display — some toxic, others impossibly rare — are a library of more than just color.

The randomness of this wall of lava lamps helps encrypt up to 10 percent of the internet.

A museum befitting the city responsible for supplying the majority of the world's LSD.

A pair of mutilated bronze octopuses slump at the base of the monument honoring California's admission to the U.S.

A miniature view of the park, caught in time.

Once the largest windmill outside of Holland, with enormous 114 foot sails.

The taxidermied remains of the "last wild grizzly bear in California" and of the symbol of the state of California.

A promotional sun clock on the site of San Francisco's great raceway.

Visible below the waves are memorials to the city's Gold Rush dead.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

A whimsical antique shop with a strong air of mystery, filled with items from ages, and what feels like worlds, past.

One of the oldest producers of hand-folded fortune cookies still uses its original secret recipe.

This Japanese treats shop may have been the first business to mass-produce fortune cookies in the United States.

This surreptitious shop is only open five hours per week.

This grinning pup statue is all that's left of what was once a ubiquitous Bay Area diner chain.

The oldest lawn bowling club in the United States.

At the base of the Golden Gate Bridge, a small sign basically begs for a high-five.

A classic advertising icon immortalized in regal bronze.

This print shop boasts one of the largest pinball arcades in San Francisco.