New Zealand's epic shrine to all things puzzling.

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.

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

This sheep farm has been forever transformed since being built for “The Hobbit” film series.

Come for the bait, stay for the brioche.

A solitary tree has grown up all alone on Lake Wānaka, backdropped by the beautiful Southern Alps.

Dolphins, ancient clams and hundreds of waterfalls make this one of the world's top tourist destinations.

The Victoria-era quarantine station for Sydney.

Though considered an eyesore by some, this boxy Brutalist high-rise plays a significant role in Sydney's past.

Museum dedicated to the terror regimes of Hungary.

Dress up like a miner and take a slide into the disco-lit depths of this once foundational salt mine.

Soaring over 6,000 feet in the Bavarian Alps, this beer garden was once Hitler's 50th birthday present.

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

Bullet holes in the church wall are a reminder of the violence that followed the assassination of a high-ranking Nazi officer.

The slender brass strip in Prague's Old Town Square was used to tell time from 1652 to 1918.

A surreal statue honoring Prague's favorite literary son.

The palace window through which Protestant nobles flung two Catholic regents, thus sparking the Thirty Years' War.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

What looks like a suicide in progress is actually a statue of Sigmund Freud.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

Macabre astrological automaton clock dating to the late 1400s.