Theme park featuring miniature replicas of European monuments.

Climb inside an iron crystal magnified 165 billion times its normal size.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

The ruins of the largest gladiatorial school in Rome are largely hidden under modern streets.

A detailed pachyderm supports Rome's smallest Egyptian obelisk.

A Nesting Doll of Churches.

Jesus' footprints and the first catacombs in the world.

2300-year-old Roman road connecting the empire.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

Germany's last remaining Lenin statue has become a lightning rod of debate about the country's divided past.

A simple tribute to the microscopic arachnid that gives its juices and its life to help make a speciality German cheese.

An imperial church bombed to ruins during WWII now stands as a jagged memorial.

This strategic isle was once swapped between empires and almost entirely destroyed in a bomb explosion.

A subterranean display of public art and architecture.

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.

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

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

This "floating railway" is one of the world's oldest monorail systems.

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

Skeletons dressed in extravagant 18th century royal costumes cavort in the aisles of this German basilica.

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