Ecosystems

Despite its grandiose name, this enigmatic first-century void under the town is no cave, and it's possibly not a palace either.

People in Poland have rallied to save this unnatural desert from being reclaimed by the forest.

This vast, pristine wilderness is home to a rare subspecies of black bear.

The home of Ireland's last leprechauns is officially protected by the European Union.

A rustic place to spend the night, complete with amazing quiver trees and outsider art.

Drink and dine in a coral cave that's at least 120,000 years old.

On this wooded path, a stained-glass window creates a spellbinding forest cathedral.

Under the desolate and windswept northern coast of Barbados stands a small oasis filled with sea anemones.

Known as the "Valley of the Moon," this Jordanian wadi is one of the most amazing desertscapes on Earth.

This beautiful grotto is one of those places where you can't believe you're just outside Austin.

Legend says train robbers stashed their gold within the depths of this unusual cave.

The site of the earliest colonial settlement in the Bahamas started as a place of religious refuge.

Just outside of Jordan's capital lies an ancient castle and intriguing caves dating back to the Copper Age.

Witnessing the might of this dessert-colored desert waterfall is a rare, powerful treat.

This unusual rock looks like a giant, otherworldly mushroom sprouting atop a cave.