The official atomic museum of the United States explores the explosive and productive history of a much maligned energy source.

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

See massive fossils that are over 200 million years old in northeastern Arizona.

This rusted car found in Petrified Forest National Park's Route 66 exhibit may be the most photographed abandoned car in the country.

This sanguine boulevard was named after a deadly cowboy bar fight.

Giant steel and concrete dinosaurs near Route 66 invite passerbys into a mineral shop.

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

A Wild West jailhouse that slid down the mountainside.

A kaleidoscope gallery and steampunk emporium named for a pioneering journalist.

This Prescott institution is widely considered the oldest bar in Arizona.

The Grand Canyon’s original airport, which once welcomed pilots like Amelia Earhart and Charles Lindbergh, lies abandoned.

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

Crafted in 1911, this steam locomotive spent its entire working life in Flagstaff.

A mass grave for victims of an airline disaster that led to much-needed safety improvements for commercial flights.

The first of the iconic American roadside attractions lives on as a college mascot.

The graffiti-covered ruins of an abandoned trading post in the middle of the Navajo Nation.

A mysterious spirit totem at the edge of Navajo lands.

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

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

An overgrown collection of miniature buildings still stand as evidence of one couple's obsession with The King.

Forget Hollywood, one of the biggest stars in the world can be found in Roanoke, Virginia.

This monument is dedicated to those lost on June 6, 1944, in the town with that day’s highest per-capita casualty rate.

This balancing rock is one of Utah's most unusual geological formations.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.