On the edge of grassland in northeastern Colorado, these rock formations are some of the few remnants of a high plain that has eroded away over millions of years.

After being lost for nearly a century, this historic bell finally returned home after its mysterious theft.

The start of the group that straightened the teeth of a nation.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

Colorado’s most beloved glacier is an imposter.

The remains of an early 1900s dude ranch that operated until the 1970s.

This fully restored synagogue explores the American Jewish experience along the old frontier.

This 19th-century house museum features a horse-drawn hearse and other antique oddities.

This notorious dive has been serving up both kinds of spirits since 1879.

In the 1950s, two women saved this grand theater in the Colorado mountains from demolition.

At the tallest peak in Colorado, an electrifying mix of thin air, lightning, and rivalry.

This open-air reconstruction of an Old West town, a cross between a theme park and a museum, provides an immersive historical experience.

Isak Heartstone, a 15-foot wooden troll made out of recycled materials.

This statue of an obscure comic strip hero stands as a tribute to patriotic service and a cautionary tale about embracing fads.

The US Navy's only submarine museum is also home to the world's first nuclear submarine.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

This historic train station has been converted to a locomotive themed hotel.

This 12-foot-tall T-rex is the largest K’Nex skeleton sculpture in the world.

The first national memorial to honor all women suffragists stands on land where suffragists were once imprisoned.

The last of nine massive kilns that produced many of the red bricks for buildings in Washington, D.C. and northern Virginia in the early 20th century.

A whopping 14,000 copper coins cover this miniature fighter jet.

This pre-Revolutionary War grist mill ground corn and flour for soldiers in seven American wars.

A farmhouse where soldiers left their marks on the walls and attic

A battleship’s mast sits atop a turret-like memorial, commemorating those who lost their lives in one of the precipitating events of the Spanish-American War.