The largest brick bridge in the world.

Enter the cabin of a life-sized Hindenburg replica.

This 8th-century Bavarian monastery is home to an exquisite Baroque-era library.

Executed in 1401, Exhumed in 1878, Stolen in 2010.

A strange rock formation with numerous legends trying to explain it.

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

A quaint Russian village in the middle of a German metropolis.

What was once thought to be a wellspring of unicorn bones is actually just a prehistoric burial site.

These blingy, baubled skeletons lie in glass boxes inside a baroque Bavarian church.

This "floating railway" is one of the world's oldest monorail systems.

A wunderkammer of mysterious objects and stories.

Art and a pun, all in one.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

An eerie, derelict amusement park in Berlin.

Turkish adventurer antiques in the heart of the Grand Bazaar.

Mortarless walls that stretch for miles are a lovely solution for creating grazing land in the harsh terrain of the Aran Islands.

A tribute to the incredible generosity the Choctaw Nation showed the Irish people during the Great Famine.

This burial pyramid in central Ireland is thousands of miles and thousands of years away from its Egyptian inspiration.

The world's toughest modern Christian pilgrimage leads directly to the gates of Hell.

Once the longest bridge in Ireland, this rusting span sits abandoned and overrun by nature.

Obelisks and stone pineapples in the Irish countryside.

This ancient Irish religious site is covered in ancient carvings, many of which have barely aged.

An 80-year-old plane tree is devouring an iron bench at Ireland's oldest law school.