This popular pilgrimage site offers a hole filled with holy healing dirt.

The ruins of this abandoned fort now stand as a picturesque reminder of America's march West.

This southwest-styled home in Santa Fe claims to be the oldest house in America thanks to an ancient bit of foundation.

Despite time, colonization, and the brutal New Mexican heat, these Pueblo ruins still stand.

The largest island on the great salt lake is home to curious creatures and strange stories.

Bizarre lunar-like landscape with thousands of large stone "hoodoos."

A downtown park built on top of unclaimed graves.

When ecosystems collide in the arid Southwest.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

The highest bridge in America was built for an almost unnervingly small amount of money.

This Colorado hiking trail provides a small gold mine of abandoned gold mines.

This razorback ridgeline has doubled as a scenic drive since the early 1900s.

The largest source of fossilized insects anywhere.

This deserted Gold Rush town is home to a Masonic lodge that, strangely enough, still holds meetings.

Once a mortuary that held the remains of Buffalo Bill, this Denver hotspot is now a death-fixated restaurant.

The site of the "Bone Wars" between two rival paleontologists during the dinosaur rush of the 19th century.

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

This now-abandoned outcrop is an important Native American spiritual site, overtaken by European settlers and mining pollution.

This French Canadian classic is a specialty of the oldest continually used church in Minneapolis.

This walkway is so narrow it needs its own light to stop pedestrian traffic jams.

The oldest continuously occupied public building in the United States.

Within the former ghost town of Cisco is a carefully restored tiny town with one resident and its own art residency.

The fifth-longest natural arch in the world, and the longest outside China.

A lavish 16th-century mansion filled with spectacular staircases, fantastic frescoes, and gorgeous gardens.