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

A replica of the Liberty Bell rang daily from West Berlin's City Hall throughout the Cold War.

These former Nazi anti-aircraft towers offer a singular view of the north of Berlin in the summer, and a sanctuary for bats in winter.

An old tram depot transformed into a vintage car paradise.

An abandoned NSA listening post on Berlin's "Devil's Mountain."

A tree-like building perches on its trunk in the Steglitz neighborhood of Berlin.

Started as a kitchen garden, now the second largest botanical garden in the world.

This conical hill was built as a testing ground for an engineer known as the Glider King.

If you visit the burial place of King Frederick the Great, you'll likely find a couple of potatoes sitting on his tombstone.

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

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

Germany's Glienicke Bridge has a shady history of clandestine meetings, espionage, and spycraft.

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

It's always summer at the beach inside this former airship hangar.

This noble mash-up in eastern Luxembourg is part Medieval, part Renaissance, all castle.

This tri-part waterfall is a little bit of fairytale beauty in the heart of Luxembourg's Little Switzerland.

This Luxembourg cave is covered in cryptic looking marks left by mining activity.

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

This 600-year-old home seems to defy physics.

A tiny chapel clings to a precipice above Germany’s gemstone capital.

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

Now overgrown, these anti-tank barriers from World War II are sometimes called "dragon's teeth."

A former ironworks that was the first UNESCO industrial site.

Germany has its very own Centralia, whose spark remains attributed to "spontaneous combustion."