The highest point in Texas is capped by a big silver pyramid.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

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

A short but powerful waterfall resides amid Colorado’s Great Sand Dunes.

When ecosystems collide in the arid Southwest.

Inside this striking glass building, visitors can see thousands of dinosaur fossils in the positions that nature deposited them more than 150 million years ago.

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

This small, but beautiful waterfall has attracted visits from artists, composers, and two United States presidents.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

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

A little-known hot spring haven right below the highway.

Despite being one of the most photographed vistas in the Rockies these twin peaks are rightfully known as the "Deadly Bells."

Temporary Burning Man sculpture made of two 18-wheelers.

Las Vegas's very own 40-foot-tall fire-spewing praying mantis.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

Decades' worth of lost and forgotten objects make up the collection of this tantalizingly odd little museum.

This vintage animatronics show is the Vegas version of a walk through the woods.

Nevada's largest cactus collection stands outside a candy mogul's small factory.

This iron and wood Civil War city-ship was the first vessel to be sunk by an electrically detonated torpedo.

A four-hour holy-rolling, Hallelujah-shouting, Southern gospel service, rendered as a country market where "All Is Welcome, Jews, and Gentiles."

Contrary to popular belief, this memorial does not actually claim to mark the bluesman's grave.

After decades of research and rumors, Little Zion Church was proven to be his final resting place.

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