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

This comprehensive collection features Native American artifacts dating back centuries.

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

Semi-recognized center of the world, with many oddities.

The state bird of New Mexico, constructed entirely out of garbage.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

This memorial includes fragments from one of the greatest tragedies in United States history.

The final resting place of the businessman-turned-astronomer who helped discover Pluto stands near his observatory.

A scrap-metal sculpture recalls an infamous 19th-century camel.

A mysterious "wedding cake" castle in the middle of the urban desert.

This is one really big nut.

An urban laboratory.

Hike the unusual hoodoos and rock formations that form this little-known natural wonder.

Come for the pizza, stay for a performance on the world's largest theater pipe organ.

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

Open since 1938, this diner has kept its fountain, malt machine, and all the gum that greasers left beneath its counter.

Ancient pueblos built into the base of a natural canyon wall.

A Wild West jailhouse that slid down the mountainside.

Don't blink or you'll miss it.

Make a wish at what might be America's only Catholic shrine to a sinner.

A rare wayfinding portmanteau of “Street” and “Avenue.”

This collection of neon icons is preserving Arizona's history, one sign at a time.

The world's largest military aircraft cemetery.

This curiosity shop contains a museum filled with bizarre, unique objects.