A church of bones, decorated with 40,000 human skeletons.

19th century pendulum and a clock restored by a rogue group of guerilla artists.

Historic medieval fortified city in southwest France.

A New Zealand communications tower stands as the tallest structure in the Southern Hemisphere.

An incredible garden taking over the interior of a massive sinkhole.

The celebrated eyesore created by starry-eyed sweethearts.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

Pilgrimage site for star-crossed lovers.

An underground city of salt.

This one-time health resort was used by aristocrats around the world.

This massive subterranean fissure is known as the "underground Grand Canyon."

Macabre astrological automaton clock dating to the late 1400s.

A whimsical bridge adorned with decorative dragons.

A controversial memorial at the place where Captain Cook met his violent end.

Relics of Australia's convict past, and a modern scene of unimaginable horror.

Nine limestone rock stacks on Australia's "Shipwreck Coast."

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

Clusters of huge boulders in the Australian Outback.

An opal mining town in the middle of Australia where people live, worship, and shop underground.

The largest collection of Indigenous Australian artifacts in the world, and the rare museum where wood-and-glass cabinets have trumped interactive exhibits.

When you get to Magnetic Hill park near the sign, put your vehicle in neutral gear, and watch it roll uphill...

Prehistoric park filled with the fossils of dozens of extinct species including Australian megafauna.