Ancient Greek oracle of the dead.

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

This field of half-buried stone crosses was the burial place of a sect of heretical gnostics.

This open air archeological site houses almost as much wildlife as it does classical religious artifacts.

A little-known park with unusual, half-ruined structures and a mystical energy.

An abandoned Byzantine fortress and notorious prison.

A two thousand year old brothel uncovered in Northern Greece.

Berlin's beloved bear is immortalized at the Museum für Naturkunde.

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

This curious sculpture represents the perseverance needed to take to the skies.

One of the world's heaviest musical instruments towers within a popular urban park.

The world's first clock to use set theory as a measure of time required the invention of a new light bulb just to maintain its obtuse measurements.

After a nearly successful attempt on Hitler's life, the conspirators met their fate in the courtyard of this Berlin building.

Known simply as "The Hand," this famous public sculpture in Berlin was featured in a Depeche Mode music video.

A collection of abandoned typographic signs from Berlin and beyond.

An eerie, derelict amusement park in Berlin.

A portable, wooden replica (minus the hyphen) of Hamburg’s iconic crooked coffee shop.

Floating swimming pool within a moored vessel.

The music is over at the Ballhaus Riviera Ballroom, but the ballroom remains in haunting disrepair.

This sprawling Jewish cemetery is one of the largest in Europe.

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

A surreal museum of extraordinary industrial objects.

This futuristic German spa allows visitors to float in a pool of salt water while zoning out to underwater techno.

This eye-catching roundabout sculpture commemorates one of England's best World War II-era "shadow factories."