The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

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

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

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

Leave a button on the jacket of this iconic Seattle clown.

Dedicated to the art and science of glass in equal measure, this space is as much laboratory as museum.

One of many reminders of Tesla's scientific contributions overlooks the falls which inspired him.

The first declared National Monument in the United States.

A dazzling display of red rocks weathered into spires and hoodoos.

A 90-foot-tall psychedelic "tree" on the side of the highway has baffled passersby for decades.

Chicago's Navy Pier on Lake Michigan was a training hub for aircraft carrier pilots during WWII.

Illegal drag racing two stories beneath Chicago’s streets.

A little-known subterranean street runs under some of the best-known buildings in Chicago's River North.

This quiet neighborhood is also home to a 700-ton rock transported by the last Ice Age.

Granting the right of way to ships over surface traffic since 1917.

This Puget Sound military post has a long, turbulent history as a gateway to the Pacific.

Allowing humans and fish alike to migrate from freshwater to saltwater and back again.

A winding path built in secret on the edge of the continent.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

This abandoned horse racing track was an exercise in hubris from its inception.

The stone circle honors the 19 firemen who perished during the Yarnell Hill Fire.

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

This memorial pyramid marker honors one of the United States Government's first official camel riders.