Wall to wall taxidermy at Denver's oldest and most exotic steakhouse.

Air Force Academy Chapel made of 100 identical tetrahedrons works to inspire those of all religions.

The first declared National Monument in the United States.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

A beautiful geyser under environmental threat.

An architect's childhood fantasy treehouse made real.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

Derelict buildings are all that remain of a complex at the site of one of the worst mining disasters in Montana history.

A rapidly disappearing glacier filled with extinct grasshoppers, perfectly preserved in the ice.

The highest point in Montana is as rugged and singular as the state itself.

The ravine where Jesse James supposedly performed an impossible jump to evade capture.

One devoted couple has donated multiple recreations of Michelangelo's sculptures to this South Dakota town.

A fitting attraction for the corn capital of the world.

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

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

This prehistoric sinkhole lured exclusively male mammoths to their death, much to the delight of science.

This erect, phallic geological spire wasn't always named so domestically.

Site of the 1879 Cheyenne Outbreak and the site where famed Sioux chief Crazy Horse met his fate.

This historic hotel on Bathhouse Row in Hot Springs National Park has a storied history of gangsters and baseball greats.

One of just a few cities in the world to base their center of government on an island. Others: Paris and Osaka.

Giant six-pack could provide one person a six-pack a day for 3,351 years.

This open air cathedral invites all faiths to worship under the only roof big enough to fit them all: the sky.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.