This scalding hot river was thought to be a myth until one geoscientist made it his quest to study the mystical waters.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

The tallest sea cliffs on the Southern Hemisphere are a climber's worst nightmare.

This sacred cave temple is home to thousands of bats and according to legend, a giant snake king.

Secret gardens just a few miles from downtown Atlanta.

The beauty of urban decay, hiding some dark secrets.

Granite rocks that concentrate waves into powerful jets.

A beautiful, but toxic, lake formed by mining.

Australia's largest medical museum featuring a 19th-century pharmacy.

A Turkish ghost town abandoned in a population exchange with Greece.

Naturally protected city carved from a rock face.

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

Live a night as a Byzantine King, with a minibar and private jacuzzi.

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

Roman ruins, natural methane fires and a lovely beach.

Ottoman-era houses lovingly preserved.