This memorial to World War II's fallen airmen shows us the movements of the stars that once guided them.

Follow the original medieval paths that wind through this intriguing section of the city.

Brussels' favorite peeing boy has a sister.

A little sculpture with a large wardrobe.

A marble Lucifer hides behind the pulpit of this Gothic cathedral.

Climb inside an iron crystal magnified 165 billion times its normal size.

A cablecar-station-turned-revolving restaurant with 360-degree views of the Swiss skyline.

A breathtaking bridge that crosses a vast gorge over a river's torrents, and has a tale of a devil architect attached.

This ancient village provides insight into the complexity of the pre-Columbian Fremont Culture.

One of the most remote spots in America and the first protected wilderness area in Nevada, named after an old legend.

A gothic palace of endless stalagmites and pseudoscorpions waits within one of the world's most beautiful caves.

This spectacular track has run continuously since 1882.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

These elusive, isolated rodents evolved into a distinct, locally iconic subspecies.

This abandoned bootleg attraction was built to cash in on the popularity of classic TV show, F Troop.

The biggest solar telescope in the world helps reveal the secrets of our sun.

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

This 40-room dwelling tucked within a cliff was built by the basin's prehistoric residents.

The largest natural travertine bridge in the world is nestled in a small canyon in central Arizona.

Some of the tallest ancient American ruins continue to inspire awe and curiosity.

Ancient pueblos built into the base of a natural canyon wall.

This historic national park is covered in the stunning ruins of red rock pueblos.

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

See massive fossils that are over 200 million years old in northeastern Arizona.