An Arizona museum with a collection of pharmaceutical oddities, including a jar of a gangster's chewed gum.

Walk through the actual strap iron cells and solitary chambers of Arizona Territory’s first prison.

An old saloon in the West filled with history, and according to some, a few dozen ghosts.

Yo, Adrian!

An artificial crater field that trained astronauts for lunar exploration.

Wisconsin's most celebrated export gets the royal treatment on I-94.

California's own majestic geyser is powered by a subterranean volcano.

Turning night into day in Victorian-era Austin to thwart a serial killer.

A wild west cemetery in Tombstone, Arizona, provides a window into the Old West.

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

The Grand Canyon of Texas.

Tracks near this Texas nature site were once thought to support the Creationist belief that man and dino coexisted.

Limestone caves with spectacular showcase chambers.

A spiritual vortex among the red rocks in Sedona.

The world's largest military aircraft cemetery.

Made of giant chains and hung with shackles, this iron cross honors those unknowns who perished under American slavery.

This failed condo development was reborn as a street art hub.

A store full of vintage and indie toys designed to bring out the kid in even the crustiest of adults.

An extraordinarily ornate museum in San Diego holds wondrous anthropological treasures.

America's only nuclear missile silo open to the public.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

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