This city square dates back to the Scottish Enlightenment and was home to some of Scotland's brightest minds.

More stones than Stonehenge, all scattered within a windswept landscape sure to enchant 'Outlander' fans.

This strange sculpture depicts a giant nightmare hare crushing a man to death beneath its colossal bulk.

This lurid German fountain plots the sad course of marriage from dating to death.

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

A castle from the Holy Roman Empire that hosts traveling youth... in its stables.

A museum that chronicles the history of the Nuremberg Trials for Nazi war criminals in the building where the trials were once held.

Church built on the site where the last tsar of Russia and his family were killed.

The oldest museum in Russia is home to a fascinating collection of nearly two million anthropological artifacts and anatomical curiosities.

Flamboyant architecture from the turn of 20th century.

The reconstruction of this prominent building fulfilled a long-written command.

An encyclopedic collection of mammal penises.

This boat represents the promise of undiscovered territory, a dream of hope, and progress and freedom for Iceland.

A unique, free-floating electric ferry may be the only of its kind in Europe.

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

Twisted buildings adorn the banks of the Rhine river.

After this historic church was destroyed by World War II bombing, its blackened shell was left standing as a monument.

Striking occult iconography on a medieval German church.

Hamburgers are intensely proud of their tunnel beneath the river.

Once the tallest building in the world, this abandoned church is now a monument to the destruction of WWII.

Located in the middle of public park, this cave built in the early 19th century houses an ancient stone sarcophagus.

A highly-criticized monument in Budapest has become the site of a makeshift Holocaust memorial.

A statue in Budapest's Liberty Square honors the former U.S. president's efforts to end the Cold War.

Legions of Roman soldiers bathed in this ancient spa complex under a Budapest transit station.