An ancient church on a tiny island covered in stone bible stories has controversially been turned into a museum.

While not Turkey's deepest underground city, this subterranean redoubt is the largest.

This cascade of mineral-rich hot springs and waterfalls is an oasis in the Jordanian desert.

Geothermal waterfalls in Tuscany.

Roman ruins top white travertine terraces formed by ancient hot springs.

Hidden just under the waters around this Turkish island are the ruins of a once great city.

Whimsical wash tubs row down the stream as part of this Carnival celebration.

An isolated dive site teeming with cnidarians.

An emerald-green grotto just a short trip from Austin.

Stay in a room with a view... of the bottom of the ocean.

An unfortunate geological resemblance to Satan has labeled this Pasadena gorge as a passage to the underworld.

This Big Sur waterfall drops 80 feet directly into the Pacific Ocean, and inspired the hillside house up top.

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

The scuba diving training facility was named for the steam that rises from the cave's chimney.

This natural wonder drops 16 stories straight down through rare flora and streaming waterfalls.

Non-profit time travel mart sells goods you would need for a trip through the fourth dimension.

Carved by a waterfall in a hard-to-reach rock formation, this heart-shaped rock has inspired romantics for decades.

This geothermal hot spring hides beneath a slowly growing mineral dome.

A rescue facility that caters specifically to wolf-dog hybrids, and educates about these unique animals.

The frozen bubbles that form on the icy surface of this Canadian lake contain enough methane to create a small explosion.

Rusty red sands line the shores of this Canadian Province.

This natural sea cave hides a small wonderland of natural turquoise beauty.

Rustic natural hot springs in the deciduous rain forest.