The outcropping is graffitied with the name of the beloved musical Muppet television series.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

A display of magnificent stained glass windows is the first exhibit of its kind.

The palatial McDonald's that inspired Wesley Willis.

A gothic church spire sits atop this skyscraper, the tallest church in the world.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

At Chicago's revered Field Museum, visitors are invited to learn about and literally explore DNA.

Years of archaeology, just chillin' by the water cooler.

These pretty kitties killed and ate as many as 135 railway workers.

This $3 million model train takes you through Chicago, Seattle, and the thousands of miles in between.

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

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

The second largest roadrunner in the world stands 11 feet tall in his West Texas town.

A Texas cave network is home to some of the world's most spectacular-looking and bizarrely named mineral formations.

The hidden jewel of Disneyland: a members only playground for the Disney elite.

Megachurch turned Catholic church comprised of 10,000 glass panes.

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

North America's largest accredited model railroad museum.

A glimpse into the lives of the the Miwok and Paiute people in Yosemite National Park.

The interior of the Overlook Hotel in "The Shining" was based on this Yosemite original.

Only hotel where you can legally launder money.

The second building of its name to occupy this location might be the finest flatiron building in San Francisco.

San Francisco's oldest surviving monument and meeting place for 1906 survivors.

This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.