New fungal and bacterial species call this deadly lake home.

A beautiful footbridge with over 2,000 glass sculptures along the walls and ceiling.

This immigrant bridge once spanned the Thames but is now a fixture of an Arizona city.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

The oldest continuously occupied public building in the United States.

Thousands of pieces of art have been carved into the rock at the site of an ancient volcanic eruption.

Home of the International Space Hall of Fame.

A blacklight journey through a celestial art exhibit.

A unique geological area spiked with wind-carved rocks that resemble teepees.

These ruins of a pre-Columbian cliff village are among the most beautiful and well preserved in New Mexico.

This fast-food outlet is the only space and UFO-themed McDonalds in the world.

A museum dedicated to the alleged Roswell Incident.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

A brick-paved former section of the historic coast-to-coast highway.

Derelict buildings are all that remain of a complex at the site of one of the worst mining disasters in Montana history.

High in the Rockies the third largest statue in the U.S. opens her welcoming arms, and lights up the night sky.

The last physical evidence of the Lewis and Clark trail is one of their autographs etched into this giant rock.

The palatial McDonald's that inspired Wesley Willis.

This architectural stunner is one of the few surviving Egyptian Revival theaters in the U.S.

A river with some unusual, and occasionally dangerous, habits.

Oversized statues are just the tip of this nostalgic Americana roadside attraction.