A coal fire has been burning underground here since 1896.

These mid-century motels once housed the workers who built the Glen Canyon Dam.

This magnificent natural sandstone bridge is one of the largest in the world and is an iconic symbol for Lake Powell.

Most-visited and most-photographed slot canyon in the American Southwest.

A sharp bend in a dramatic river canyon cut through red rocks.

A tunnel with windows, so you don't miss out on the impressive views.

The unusual patterns in this rock formation result from two distinct modes of weathering.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

The first declared National Monument in the United States.

The crumbling structure is a rare surviving relic of the area's bygone mining industry.

The cluster of boulders near Fort Irwin is covered in military insignia.

A six-ton, 12-foot-tall concrete prairie dog is touted as the largest in the world.

Dedicated to the history of the 1,000 nuclear missiles that once covered the Great Plains.

One of the first intercontinental ballistic missile sites in the United States.

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

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

This replica stave church looks like a piece of Norway was simply plopped down in South Dakota.

This towering wooden Sasquatch was carved with a chainsaw.

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

The ruins of this former mining boomtown once housed over 3,000 people. Now, the population is two.

A one-of-a-kind sundial at the Very Large Array honors a radio astronomy pioneer, incorporating the original piers from his breakthrough radio telescope.

Twenty-seven massive radio antennas on the high plains of New Mexico search for life on other planets.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

Giant origami sculptures tucked into desert scenery beckon passers-by to explore further.