Krakow's own version of the Hollywood Walk of Fame.

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

Extremely famous in his native country, this Cracovian painter is all but unknown beyond Polish borders.

Learn the fine art of making a centuries-old treat at this hands-on food museum.

Inside this Krakow church, an explosion of psychedelic color.

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

One of the largest amphitheaters in Europe is a former Nazi German gathering place that still stands today.

A haunting contrast of trains that both saved and took the lives of Jewish children in Nazi Germany.

A pair of giant stone heads represent the ancient Roman saints beheaded here.

The Suurhusen church tower in Germany leans over farther than the famous Leaning Tower of Pisa.

This stone amphitheater was once part of Nazi Germany's plan to promote propaganda.

This futuristic German television spire is actually the world's largest digital clock.

Tiny castle in the middle of the Rhine made you pay to pass.

Twisted buildings adorn the banks of the Rhine river.

This incredible stone temple is a monument to death, victory, and fantasy architecture.

The "Prussian Versailles" that is as glorious today as when it was built.

This Dresden church was purposely rebuilt Protestant after being demolished in World War II.

An industrial relic is now one of Europe's most staggering art spaces.

Hamburgers are intensely proud of their tunnel beneath the river.

A German apartment building hosting as many trees as human occupants.

This unique Renaissance castle was turned into a home for Nazi occultism.

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

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

In this German city center, the streets have no names.