Dozens of elegant ceramic tiles decorate these ancient walls, each displaying the Lord's Prayer in a different language.

This narrow coastline trail through the dense Kauai wilderness is among the most beautiful and dangerous in the world.

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

This daunting 1st century fortress was purportedly the site of one of the most dramatic revolts of the Jewish-Roman wars.

The oldest (maybe) swimming pool in Iceland is a stunning oasis built into the side of a lush hill.

The home of the Dead Sea Scrolls is an abstract modernist dream.

A once grand hotel is being retaken by the wilderness it once capitalized on.

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

Partially collapsed lava tube and cave system complete with concert hall, underground pond, and unique albino crabs.

Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.

A massive, heart-shaped, wind-carved crater in the middle of the Israeli desert.