The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

Over thousands of years, this slot canyon was carved out of the bed of an ancient lake.

A metal ring in the middle of the road marks the exact spot where the Soviet satellite crash-landed in 1962.

This cave holds a surprisingly colorful variety of geological oddities.

This pebble beach is so beautiful that taking its rocks is against the law.

Vikings and Evangelicals have both had a hand in this replica medieval church.

At the time of its completion, it was the tallest dam in the world.

A popular rock that acted as a waymarker for American pioneers.

A monument to the egos of two railroad magnates that fell into decline along with their careers.

This prison-turned-museum is a remnant of the Old West's grizzly, violent past.

An architect's childhood fantasy treehouse made real.

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

One of the world’s largest collections of petroglyphs records 2,000 years of human activity.

This nearly abandoned town was once a thriving mining community until a series of fires.

Possibly the world's only drive-in movie theater with an attached motel.

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

The highest paved road in North America winds its way up Mount Blue Sky in Colorado to an altitude of 14,130 feet above sea level.

One of the greatest heroes of the Titanic tragedy came from humble beginnings to this beautiful home.

These faux-cliff dwellings allow visitors to climb around on a replica archaeological site.

Thanks to a quirk of elevation this gift shop produces magic doughnuts that are found nowhere else on Earth.

A chance to follow in the footsteps of the word's most legendary animator.

148 feet long and in the middle of a verdant forest.

This abandoned bridge is now a favorite haunt for graffiti artists.

This mass grave for victims of a massive hurricane remained hidden until 1991.