The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

A breathtaking array of ancient Pueblo structures and artifacts counterintuitively preserved by neglect.

Silver in the hills led to the speedy creation of this boom town and a lack of it saw the town abandoned nearly as quickly.

“You better take care of me Lord, if you don't you're gonna have me on your hands.” ― Hunter S. Thompson, Fear and Loathing in Las Vegas.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

An experimental, automotive replica of Stonehenge.

Decommissioned experimental solar facilities that pioneered solar energy technology.

This historic roadhouse has many tales to tell of San Francisco's early history.

Beneath the southern end of the Golden Gate Bridge is the “Gibraltar of the West Coast,” a fort built to protect the San Francisco Bay from naval attack.

A sparse, solitary sequoia still stands as a living tribute to the famous conservationist who planted it—but it's dying.

Sports history, made in the Arroyo Seco.

A museum dedicated to restoring vintage aircraft, located at a working airport.

The century-old bell and clock tower at UC Berkeley is the third-tallest in the world, and has fossils.

Concrete strongholds stand guard over the Golden Gate.

This conservation area is also home to many of the region's desert tortoises.

A unique market that brings together various goods and cultures.

A pier that used to act as a busy ferry dock is now a decaying favorite of local fisherman and urban artists.

Centuries of crashing waves carved out this small hole in the rock, which lights up at certain parts of the year.

It's not your typical library, memorial, or book store.

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

A playground built by the kids that is a child's wonderland, and a helicopter parent's nightmare.

The headquarters of a secretive order is also a beautifully-designed park.

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.