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

Around half a million years ago, these magnificent columnar basalt cliffs were formed from cooling lava.

The residents at this Yellowstone wildlife park will certify your cooler as "bear-proof."

No Gordon Lightfoot song, only a barebones monument to greed.

One of the largest collections of wildlife art in the United States, built into the side of a cliff in rural Wyoming.

This rustic old building is said to be the most photographed barn in America.

In a small Japanese garden off a busy Denver street, a memorial to a brave, principled politician.

This Chinese-style quartz sundial was saved in its final hour.

A downtown park built on top of unclaimed graves.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

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

The world's largest key collection features keys to the White House, Frankenstein's castle, and Hitler's bunker.

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

A focal point of in Denver’s skyline for over a century, inspired by a Venetian basilica.

A small horde of mythical creatures lurk almost imperceptibly within the museum's wildlife dioramas.

Hidden beyond a kitschy giant beetle is this remarkably sprawling collection of preserved insects.

The moving metal works of one troubled artist can still be viewed on his front lawn... for now.

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

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

These Pre-Columbian petroglyphs contain representations of birds, deer, hunters, and even some early Native flute players.

Life-sized sculpture of a blue whale made of hand-recycled plastic trash.

The top of a giant mesa, just outside of Amarillo, appears to float in the sky above.

A pair of giant legs paying homage to a poem, a king, and it would seem, socks.

This constitutionally sound Muffler Man harkens back to the days these attractions were a must-see.