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

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

An Ancestral Puebloan ruin that appears to burst into flames in the sunlight.

One of the most extensive and well-preserved collections of dinosaur footprints in North America.

This maintained cabin is where Josie Morris, an occasional associate of Butch Cassidy, lived out the last 50 years of her life by herself.

Thousands of years ago, Indigenous people painted images onto these canyon walls that are still on display today, provocative, mysterious, and enduring reminders of the people who lived here long ago.

A small Wyoming town is home to the state's oldest-operating soda fountain.

The only retired U.S. nuclear missile silo that is open to the public.

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

Take a dip in the world's largest mineral hot springs pool.

This interpretive path lets you get up close and personal with dinosaur bones.

If they push on just the right spot, even the weakest person can move this titanic boulder.

Ancient paintings known as the "Sistine Chapel of Cave Art."

Walk upon the mementos of the dead in this Parisian courtyard paved with medieval tombstones.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

The show's fictional Korean medical camp was created in the Santa Monica hills.

Dozens of feral felines rule a segment of Hollywood's only graveyard.

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

A hospital closed seemingly in the middle of operations, leaving behind fodder for horror films and ghost hunters.

The only theatre in the world constructed specifically for sound movement.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

Up-close opportunities to see working birds of prey.

Check out a hidden collection of vintage neon signs.

Birds with backpacks expedite film development for a rafting company on a remote Colorado river.