When zealous marijuana enthusiasts kept stealing the "Mile 420" highway marker, the State of Colorado got creative.

Jule Körner's house full of bizarre architectural details.

This spiny beast guards an artist's village while vying for the title of largest lobster in the world.

The Uros people live on floating reed islands in lake Titicaca.

A roadside collection of over-sized iron creations that are a bit more macabre than most.

The first declared National Monument in the United States.

This shallow pit was once used to send over 20,000 buffalo plummeting to their death.

One of America's first dinosaur parks gives a window into Depression-era paleontology.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

Giant six-pack could provide one person a six-pack a day for 3,351 years.

An abandoned village that doubled as "The Hunger Games"' post-apocalyptic wasteland is up for grabs.

A cabin completely covered in coffee mugs, where visitors are welcome to leave one of their own—if they can find an empty nail.

This stunning mass of ice spans 121 square miles and is still growing.

You have to love a museum with a truly dedicated focus. A focus on Superman, for example.

A set of ancient drawings in the desert of Peru that are so massive, many of them can only be fully seen from the sky.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

An Archaeological Wonder of Peru, and the largest stone ruin site in the New World.

A swing to dangle you off the very edge.

A dangling church built over a Colombian gorge.

This massive roadside mascot was the first version of the giant to illustrate his butt.

A fitting attraction for the corn capital of the world.

New fungal and bacterial species call this deadly lake home.

"Polynesia on the Plains."

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