This modest relic, with rich history as a strategic fort through multiple eras.

The first archaeological site discovered by aerial photography.

Ancient human remains unearthed around the iconic monument.

Famously misunderstood wonder of the ancient world

This memorial museum chronicles the apocalyptic destruction of the First World War.

A moving memorial to the fallen and missing from WWI trenches.

An underground city of ancient quarry tunnels hid thousands of Allied soldiers in WWI.

A monument to the thousands of Canadian soldiers who died capturing the French ridge during World War I.

Guests can stay at a hotel in the former French abbey where lie the tombs of King Henry II and King Richard the Lionheart.

The opulent home that inspired Tintin's Marlinspike Hall and the adventures within.

This former “ante-chamber to the guillotine” has been refurbished to illustrate the brutal history of French justice.

This facility has manufactured stunning tapestries for France's royalty ever since the 17th century.

Remains of Roman amphitheater hidden in a sleepy quarter of Paris.

This unusual piece of Renaissance art depicting the bodily horror of crucifixion and skin disease may have been inspired by fungus-induced hallucinations.

The world's tallest church tower reveals a spectacular view to anyone up to the task of climbing the daunting staircase.

Op-art architecture designed for happiness.

The world’s oldest military museum has remained largely unchanged since the last days of the Austro-Hungarian Empire.

Baroque celebration of the end of the Great Plague of Vienna.

The palace window through which Protestant nobles flung two Catholic regents, thus sparking the Thirty Years' War.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

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

Bullet holes in the church wall are a reminder of the violence that followed the assassination of a high-ranking Nazi officer.

An eerie, existential museum dedicated to the author of "The Metamorphosis."