Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

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

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

A roadside collection of over-sized iron creations that are a bit more macabre than most.

This public square capitalized on a single Eagles reference to bring some life back to an Arizona town.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

A pair of giant roadside arrows are all that remains of a former Route 66 trading post.

This Arizona observatory is famous for investigations into Martian life, and as the place humans first spotted Pluto.

A Wild West jailhouse that slid down the mountainside.

A spiritual vortex among the red rocks in Sedona.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.