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

One of the few remaining carousels built by master amusement park carver Charles I.D. Looff.

San Francisco's oldest surviving monument and meeting place for 1906 survivors.

The neighborhood church casts a breast-shaped shadow that locals have come to call the “two o’clock titty.”

One of the largest trees of its kind in California.

A massive ultra-modern church presents a science-fiction view of Catholicism's inclusive future.

Chevron maintains one “Standard” brand station per state so it doesn’t lose the trademark.

This stately structure has been abandoned for half a century.

The classic Atari game's iconic aliens have invaded downtown San Diego.

This quirky UFO-shaped curiosity is often mistaken for the airport’s control tower.

It should come as no surprise that the world's largest artichoke lies in the town that calls itself the "Artichoke Center of the World."

From the Difference Engine to the Cray-1, all under one roof.

An vast warehouse of everyday treasures in Berkeley, CA.

Finally the worlds of UFO enthusiasts and beef jerky lovers have come together in this roadside shop.

The awe-inspiring ship from the golden era of cruising has an incomparable history and a reputation as one of the world’s most haunted places.

A tribute to the life and work of the beloved "Peanuts" cartoonist.

Megachurch turned Catholic church comprised of 10,000 glass panes.

Not merely a museum – but a whirring powerhouse that offers a subterranean peek into the heart and soul of cable car operations.

Golden Gate Park's historic collection of plants.

An inconspicuous footbridge beloved by San Diego locals.

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

Scores of vintage street lamps shine along L.A.’s Miracle Mile.

Where a young athlete began his run across Canada after losing his right leg to cancer.

The artwork commemorates the many ways 20th-century people perished while on the clock.