Down this Cracovian street resides a plaque with a stark message about the city's air pollution.

Inside this Krakow church, an explosion of psychedelic color.

At first glance, this area seems like just another city park, but the lush landscape hides a dark past.

This man-made mound monument was built out of soil from all across the Polish empire.

The unsettling remnants of a torn down movie set lies nearby the ruined location of the actual Płaszów Labor Camp.

This Polish cave has housed a dragon, a brothel, and an enduring legend.

Real bones which are said to have belonged to a Polish dragon.

Beneath Kraków Old Town's main square lies a hologram-filled medieval market vampire graveyard wonderland.

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

A plaque marks the former home of Käthe Paulus, an aerial acrobat who invented the modern folding parachute.

A socialist building dedicated to teachers showcases one of the largest Soviet mosaics in the world.

The best bagels in Berlin are tucked away in an independent bookstore.

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

Tiny memorials honor individual victims of the Holocaust.

A monument to the man who almost killed Hitler.

Beneath the impressive baroque cathedral that rises from the center of Berlin lies the largest collection of Prussian royals in the world.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

A beautiful collection of taxidermy birds and rare pomological wax models.

Art historians have debated the identity of this medieval stone rider since the 19th century.

From Ancient Rome to WWII, Neupfarrplatz has over 2,000 years of history underneath its main square.

The world's first and only museum dedicated to dachshunds.

This riverside restaurant has been serving customers since 1146.

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