This historic little railroad runs through some of the most beautiful scenery in Germany.

The castle where Martin Luther secretly translated the New Testament from Greek to German while in hiding.

The largest brick bridge in the world.

These bronze pamphlets remember a remarkable group of Germans who fearlessly opposed the Nazis in the very center of their power.

In this truly magical place, rent hasn't been raised since the year 1520.

The fairy tale castle of the “fairy-tale king,” this was also the inspiration for Disney’s “Sleeping Beauty.”

Originally envisioned by King Ludwig II to rival Versailles, Herrenchiemsee's "New Palace" remains half-gilded for lack of funds.

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

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

This doorless 20th-century elevator doesn't stop or slow down.

Straight out of a nightmare, barcode-faced babies climb up and down Prague's television tower.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

This spaceship sculpture in the middle of the Slovakian capital looks like it just crash-landed.

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

At less than four inches in height, this iconic fictional character is the smallest public statue in all of Moldova.

This abandoned Soviet circus is slowly being restored to its Communist-era glory.

A forgotten remnant of the Soviet Union, Transnistria is an unrecognized country hidden behind a heavily militarized border between Moldova and Ukraine.

Rotterdammers' dirty minds gave this Santa a dirty nickname and cursed it to a life of wandering.

Oriental bazaar in the heart of Sarajevo.

This unusual hostel provides a glimpse of life in a city under siege.

This cluster of little wooden huts once ground local farmers’ wheat into flour during the days of the Austro-Hungarian Empire.

A WWII museum that tries to reenact history.

This 13th century Gothic brick castle is the largest in the world by surface area.