Charleston's historic city jail once held everyone from pirates to Civil War POWs.

South Carolina's last remaining slavery auction house is now a museum devoted to its own tragic history.

One of the few standing Roman lighthouses and a labyrinth of tunnels are a couple of the secrets at this historic castle.

Tubing through a cave lit with glowworms is a magical underground experience.

The real life Hobbiton, this sheep farm has been forever transformed since being built for The Hobbit film series.

These two delightful animal-shaped buildings host a visitor center and wool shop.

Major tourist destination known for its bubbling mud-pools and hot thermal springs.

This electric green sulphur lake in New Zealand looks like a cartoonish radioactive dump site.

A perfect turquoise lake colored with glacier dust.

A glacier pocked with ice caves and surrounded by rainforests.

Edoras, capital city of Rohan in Lord of the Rings, once sat atop this isolated New Zealand mountain.

This strange geological landscape erupts with sudden bursts of water.

The world's only complete colossal squid specimen is on display at the Te Papa Museum.

Come for the flowers, stay for the bats!

This trio of Australian rock spires may have inspired aboriginal legend or just modern tourism.

A massive stairway that almost wasn't leads to one of Australia's most scenic vistas.

A remote hill on a stretch of country road where the laws of physics are defied... or so it seems.