One of the largest crucifixes in the world stands 55 feet tall in a secluded, wooded area of northern Michigan.

The former headquarters of history's oldest megacorporation.

It's 2 billion years old!

This 19th-century ghost town offers a stunning view of Lake Michigan and a journey through the region's industrial past.

This staircase full of Mayan hieroglyphics is perhaps the largest single text in the world.

There is an art, a science, and certainly a responsibility to occupying The Big Red Chair, and this is where it's learned.

The world's longest covered bridge is a quaint and incredible wooden tunnel.

It should come as no surprise that the best view of the Hollywood sign is from Batman's lair.

A curious carving hides on a marble column in the Mosque-Cathedral of Córdoba.

This gorgeous, colorful 18th-century church is part of one of Bolivia's few surviving Jesuit missions.

Come for the flowers, stay for the bats!

Low tide reveals 8,000-year-old rock carvings in Southern Alaska.

The southernmost outpost of the Russian Empire in colonial America.

Of five volcanoes located in the massive Tengger caldera, this cone is the youngest and most active.

This shallow cave got its name from copious amount of human bones found inside.

This chapel on a cliff is renowned for its healing powers and was founded on the site of a supposed divine intervention.

An ancient capital city that dates back 3,000 years old and harbors many surprises.

Monasteries on rock pillars, once accessible only by frayed ropes.

A rare example of a medieval house in Rome adorned with a melancholic inscription.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

The only quarter of the Old City not dedicated to a major world religion.

The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."

The former Nazi concentration camp stands as a museum to remember this dark chapter in European history.

The ancient tomb acts as a calendar that keeps perfect time.