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

This rustic old building is said to be the most photographed barn in America.

Around half a million years ago, these magnificent columnar basalt cliffs were formed from cooling lava.

An architect's childhood fantasy treehouse made real.

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

A beautiful geyser under environmental threat.

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

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

The first declared National Monument in the United States.

The entrance to this Frankfurt subway station looks like an old tram car crashed into the concrete sidewalk.

Fantastic views and thousands of love locks.

After years of being casually peed on by humans, this tree is peeing back.

The sweet story of how American cargo planes became known as "Candy Bombers" during the Berlin Blockade.

A rare water-powered funicular, it uses a huge tank of water and gravity to do its work.

A historic casino where Dostoyevsky is said to have lost it all on a single spin of the roulette wheel.

Ruins of an aerial tramway that ran for only eight years.

World's largest barrel containing an inn.

In this German city center, the streets have no names.

While you wait to cross the street at a traffic light in Mainz, you might notice that the light is staring back at you.

Along the banks of the River Rhine lies a park that seems unassuming, but beneath the surface lies a long and fascinating history.