A unique military outpost carved into a rocky outcrop in the English Channel.

In France, a medieval-style home pays homage to an intrepid explorer who discovered Québec.

Visitors dating back to the 1600s carved their marks in the stones of the iconic tower.

Explore this medieval cathedral by trying to spot all the malevolent monsters hiding in its beautifully colored windows.

There has been an astronomical clock on this spot since the 14th century.

This kaleidoscopic mural shows Bob Dylan throughout his transition from young troubadour to Nobel laureate.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

This statue of the great Argentinian car driver is located near a famous curve of the Monaco Grand Prix.

There once was a man named Lear / Who found limericks so dear / His final resting space / Is an unusual place / Most people don’t know he’s here.

The top of society once luxuriated in this world-class hotel, which continues to impress, even in ruin.

This memorial to the victims of the Romanian Revolution of 1989 is often compared to a potato on a skewer.

This communist behemoth is the heaviest building in the world and a legacy of a brutal regime.

Romania's triumphal arch looks out over Bucharest.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

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

This Parisian café sticks almost exclusively to an ethos of reuse.

Notorious artist squat renovated into legal studios.

Brush shoulders with animatronic Arab leaders made of silicone.

This modernist cinema has survived war and reconstruction to become a symbol of Lebanon’s revolutionary spirit.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

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

The vast, legendary catacombs hold secrets much stranger than stacked bones.

Pitié-Salpêtrière was the dumping grounds for women who received the dreaded diagnosis of "hysterical."