The eroded core of an ancient volcano is now accessible by a short hike.

America's only nuclear missile silo open to the public.

A hidden world of exotic succulents and cacti.

A Saint Nicholas-themed ghost town in the Mojave desert.

The only thing still moving in this town is the eponymous hot spring.

A living snapshot of a different time in America is preserved and maintained by a community of volunteers.

This curiosity shop contains a museum filled with bizarre, unique objects.

This ancient cave is home to a museum, bar, and is filled with fluorescent minerals.

Limestone caves with spectacular showcase chambers.

Ancestral Puebloan ruins, natural arches, and box canyons abound in this seldom-visited corner of Monument Valley Navajo Tribal Park.

To honor his gardening wife, this yard artist turns bowling balls into playful, colorful sculptures.

These mid-century motels once housed the workers who built the Glen Canyon Dam.

One of the most extensive and well-preserved collections of dinosaur footprints in North America.

The skulls and bones of thousands of soldiers line the walls of this small Italian chapel.

One of the largest open-pit copper mining operations in the entire country.

An important piece of history from mankind's journey to the moon sits in the lobby of a government science lab.

The Jewish section of the famous Boothill Graveyard was abandoned for nearly 100 years.

A scrap-metal sculpture recalls an infamous 19th-century camel.

A mass grave for victims of an airline disaster that led to much-needed safety improvements for commercial flights.

The final resting place of the businessman-turned-astronomer who helped discover Pluto stands near his observatory.

This bomb shelter-themed bar has barely changed since it opened.

This 24-acre park offers a place for meditation in the midst of Sedona's iconic red rocks.

This comprehensive collection features Native American artifacts dating back centuries.

Inside this garden, visitors are offered a glimpse into how inhabitants of the region survived centuries ago.