Ute tour guides have been sharing the ancient dwellings and rock art inside this large park with visitors for more than 40 years.

One of the best-preserved medieval streets in Europe.

Gladiators battle and chariots race daily in the ruins of a once-great Roman city.

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

A museum dedicated to the mysterious cryptid.

This hot dog-shaped diner has moved all around Colorado, never been to New York.

Two tall rocks sit at the center of this site, once the home of a large Ancestral Puebloan community.

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

Overlooking the Colorado Convention Center is this giant sculpture made from thousands of triangles.

In the middle of a busy airport, a statue honoring the astronaut who told Houston that Apollo 13 had a problem.

The story behind this beloved toy—named for Theodore Roosevelt and owned by his grandson—is more complicated than you might guess.

This museum offers an actual time machine back through Colorado's past.

The huge collection of paintings of the American West is one of Denver's best-kept secrets.

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

This Boeing KC-97 tanker is now a restaurant for aviation lovers.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

Surrounded by a hundred mile radius of billboards, Little America is a roadside attraction whose primary appeal is hospitality.

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

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

This spectacular track has run continuously since 1882.

A hotel with a rich Wild West history of miners and bootleggers.

This once-popular otherworldly landscape was formed by one of the largest volcanic eruptions in history.

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