Bits of architecture from a town destroyed in World War I now decorate this hotel garden.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

The curious underground history of keeping Paris clean.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

The 1936 Summer Olympics site is a crumbling remnant of sportsmanship and a history its host country would like to forget.

A restaurant and observation deck built in a unique broadcasting antenna.

Metro station with a claim to rock n' roll fame.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

Bullet holes in the church wall are a reminder of the violence that followed the assassination of a high-ranking Nazi officer.

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

Daily jousts and dancing barrel makers in Munich's mechanical clock.

The prototype for all Nazi concentration camps.

The world's tallest church tower reveals a spectacular view to anyone up to the task of climbing the daunting staircase.

A small but immensely extravagant palace built by the "Night King."

The fairy tale castle of the "fairy-tale king."

This abandoned coliseum was intended to be a grand Nazi rallying ground before it was halted at the end of the war.

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

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

This museum tells the story of lake dwellers from 4000 BC to 850 BC, replete with stilt houses and goats.

A Black Forest cuckoo clock theme park features one timepiece big enough to walk inside.

The birthplace of Karl Marx is now a museum dedicated to the communist revolutionary's life and work.

The last bastion of Roman presence north of the Alps looms over a German town.