A Barbary Coast watering hole built into a Gold Rush shipwreck.

Inside an old airplane hangar, friends and strangers alike play on a massive trampoline.

A monument to the love people have for their pets.

The haunting ruins of Jack London's dream house.

Her final resting place was intended to be modest and private, but the power of her popularity continues to draw visitors.

This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.

This shop and studio is dedicated to the art of the book, from letterpress to bookbinding.

One of the last free public hot springs is decorated with hippie art.

The restored and active Victorian-era final resting place of San Francisco.

An overlooked and unassuming engineering marvel.

This private residence was the template for one of the most beloved television homes of all time.

Bonsai garden in Oakland is curated by the first non-Japanese female bonsai master in the United States.

A popular tourist cave with a dark past.

A faux European lane smack dab in downtown L.A.

An extensive collection of ancient Egyptian artifacts and mummies.

A still functioning vaudeville carousel that has operated for over a century boasts a colorful menagerie and past.

A historic hotel that made a cameo in Hitchcock's classic film has no intention of letting guests forget its fame.

Located on 420 acres in the high desert, this spiritual center is dedicated to the "science of the future."

The art and history of the velvet painting are on full display in this Los Angeles museum.

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

A world-class observatory in the California desert.

This unlicensed collection of fast-food memorabilia sits on the site of the first ever McDonald's restaurant.

The highest dunes in California are the most likely place in the area to hear the Singing Sands.

This impressive tunnel was dug entirely by hand over the course of 36 years.