A fire once nearly devoured this gorgeous 14th-century Gothic cathedral.

This snug medieval lane is one of the narrowest streets in the world.

This communist behemoth is the heaviest building in the world and a legacy of a brutal regime.

The bust of Romania’s most notorious ruler, Vlad Dracula aka "Vlad the Impaler," keeps watch over the ruins of his medieval court.

This once-derelict building is now one of the most beautiful bookstores in the world.

This elaborately decorated, fairytale-like Romanian royal palace is one of the most striking castles in Europe.

The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."

An impressive monument to Poland's independence.

A cluster of headless, armless sculptures looms within a popular Polish park.

The last king of Poland was interred in this church nearly 200 years after his death.

In the summer, the area around this sculpture transforms into a vibrant concert venue.

These mechanical goats first battled it out in the year 1551, all because of an overcooked deer.

Atop this library is one of the most beautiful green spaces in Warsaw.

The giant statue and its model solar system honor the native Pole who declared that the Earth revolves around the Sun.

This fairytale inspired, warped building houses restaurants, shops, and a radio station.

A statue honors the children who fought Nazis in Poland.

The Polish capital has had a deep connection to its guardian mermaid for almost a millennium now.

Museum dedicated to "the man who moved the Earth."

A tribute to the Polish insurgents who fought in the failed attempt to end their city's Nazi occupation.

The largest stretch of the Berlin Wall is right on top of the former SS headquarters

The largest free-standing aquarium in the world resides in a hotel lobby in Berlin.

An empty bookshelf commemorates the books which were lost during the infamous event

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

An imperial church bombed to ruins during WWII now stands as a jagged memorial.