Eighty million natural history specimens call this gargantuan museum home.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

The world's longest known cave system.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

Famously misunderstood wonder of the ancient world

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

A bizarre house filled with an astounding array of collections.

The fairy tale castle of the "fairy-tale king."

Dramatic river bend surrounds a natural red-rocked pedestal.

Most-visited and most-photographed slot canyon in the American Southwest.

An impressive collection of farm equipment and other artifacts from life on the prairie.

A fitting attraction for the corn capital of the world.

A place where the laws of nature seem to have gone completely berserk... but of course haven't.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

This Yellowstone geyser may not shoot as high as the nearby Old Faithful, but it erupts for considerably longer.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

A beautiful geyser under environmental threat.

The first declared National Monument in the United States.

The World's Largest Bull.

A four story, football field-sized, nine-grotto creation made of shells, minerals, and rare stones.

A half-mile long and three stories high, this bridge over the Des Moines River Valley mimics a descent into a mine shaft.

A statue high in a hill that represents how Buffalo Bill got his name.

This artsy public restroom is shaped like a giant john.