The vast, legendary catacombs hold secrets much stranger than stacked bones.

This small Bavarian graveyard is filled with empty graves for German soldiers lost during the World Wars.

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

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

A whimsical bridge adorned with decorative dragons.

A miniature train-ride through Slovenia's largest cave system.

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.

A significant example of Czech cubist architecture—a style you won't find anywhere else in the world.

Monument to a suicide protesting the Soviet invasion.

A mocking tribute to the past and modern leadership of Prague.

Nine bronze hands protruding from a wall honor the student uprising that led to the fall of Czechoslovakia's Communist government.

An enormous and lavish Gothic church in Czechia.

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

This outdoor museum harkens back to the height of the gold rush.

These two large, rusting pieces of machinery are relics of Australia’s gold mining past.

A timber transport car and a team of horses were needed to carry this lookout to the top of Mount Tarrengower in the 1920s.

A 19th-century baker stands ready to serve customers.

Cooled, fractured lava formed this geometric rock feature.

From this modest childhood home, Ned Kelly went on to become Australia’s most infamous bushranger.

Legend holds eating just one of these black eggs can add seven years to one's life.

This spa theme park lets its guests take a dip in pools of coffee, wine, or ramen broth.

A remarkable lava formation encloses a line of Buddhist statues that can't be accurately counted, according to local mythology.

Not quite the menace it once was, this monster still has some chops.

A patch of Philippines forest devoted to saving the lives of an emotionally sensitive species of googly-eyed primates.