These tombs were built into the side of a mountain so that ancient angels could reach the dead.

The hallucinogenic center of the ancient world.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

Perfectly preserved ancient monastery in an impossibly dramatic location on a rocky island in the Atlantic.

This volcanic cave lake is essentially hard proof that Iceland is the most magical place on Earth.

This fantastical waterfall is hidden in a cave located in a cracked cliff.

Crypt mausoleum in cathedral's basement contains relics of third century Roman martyr, Saint Vibiana.

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

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

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