This saltwater swimming pool, which is the last of its kind in the United States, is slowly crumbling within sight of multiple high-end beachside hotels.

A glass display case holds the document that ended the Second World War—which one person signed on the wrong line.

Hiding in plane sight.

The grand marquee of this abandoned Hawaiian theater remembers the building's elegant past.

An ode to one of the first concerts broadcast via satellite.

This World War II-era bunker is now packed with posters and props from movies and TV shows filmed nearby.

The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.

This small museum inside a larger sports complex honors the first Native American to win an Olympic gold medal for the U.S., and his life of achievement and struggle.

In Oklahoma City's Bricktown, there's a street that don't use jelly.

Oklahoma City's oldest arcade has reinvented itself as a competitive pinball mecca.

A crew of die-hard train buffs spent decades turning a defunct stretch of railway in Oklahoma City into a museum now home to over 50 antique and restored trains.

This giant mimetic milk bottle has encouraged Route 66 travelers to choose dairy since 1948.

The largest single-building tribal cultural center in the U.S. is an expansive museum in Oklahoma City.

This museum holds not just a world class collection of firefighting artifacts and gear but even the region's first fire station itself.

Behind the Cowboy Hall of Fame is a burial ground for good horses and a famed rodeo bull.

Named for the 39 tribes that live in Oklahoma, this restaurant's menu deliciously highlights local flavors.

The surprising home of the iconic Santa Monica Pier Ferris Wheel.

Celebrate the history of the rich and truly misunderstood relationship between man and pigeon.

An old spiral fire escape dangles above a public courtyard in Midtown Oklahoma City.

Collection of skeletal systems from the "world's leading supplier of osteological specimens."

Travel through the hidden underbelly of the city in colorful tunnels filled with art and history exhibits.

An immersive art experience built by local arts collaborative, Factory Obscura, in the building formerly known as The Womb, a psychedelic arts center founded by the frontman of the Flaming Lips.

The entire history of the U.S. Space Shuttle Program is painted on an enormous roadside water tank.

A cave's rare beauty held a cavernous secret hidden underground.