Bootleggers ran booze beneath this building before (and after) Route 66 appeared beside it.

The first steel dam in the world and the only one still functional in the United States.

A classic Route 66 landmark that was built with scrap lumber and is held together with kitsch and puns.

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.

These black pillars of volcanic basalt seem to call mountain climbers with an unbreakable siren song.

At the base of Steens Mountain resides an otherworldly desert.

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."

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

This Yellowstone geyser may not shoot as high as the nearby Old Faithful, but it erupts for considerably longer.

A beautiful geyser under environmental threat.

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

This site is home to ancient petroglyphs and pictographs dating back to 6,000 B.C.

The fifth-longest natural arch in the world, and the longest outside China.

The location where the iconic movie character declared it was time to go home.

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

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

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

This mesmerizing and surreal landscape features intricate patterns of white and red sandstone.

A striking, menacing sandstone peak towering above a landscape that's equal parts Mordor and the Moon.

This raised bulls-eye visible from space was the subject of an intense geologic controversy.

Few things look more out of place than the electric blue ponds in the reddish-brown desert of Utah.