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

It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.

Sweden's "good old days" painstakingly re-created in a model village.

Stockholm's deepest subway station is also a stunning ecological wonder.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

Third time's a charm, or in this case, two testicles are.

Three connected pink triangles memorialize persecuted gays and lesbians throughout history.

Time stands still at this serene burial ground in the center of Budapest.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

Berlin's natural history museum houses the world's largest mounted dinosaur and the late beloved polar bear Knut.

The most visited, and possibly most controversial, museum in Germany.

This little sun pays homage to a massive gate that once stood at this location.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

A lush indoor jungle fills this bustling Madrid transportation hub.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

A former squatter's paradise outside Prague.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

Macabre astrological automaton clock dating to the late 1400s.

An alien landscape on the banks of the Aegean Sea.

A miniature desert appears out of nowhere on the lush isle of Lemnos, like something out of a Greek myth.

This tower is all that remains of the mosque that once stood in the center of the city, before it was destroyed by fire in 1941.

Monasteries on rock pillars, once accessible only by frayed ropes.