Dishes are packed with flavor at one of the only Singaporean restaurants in Paris.

Shop at the 200-year-old store where Julia Child stocked up on copper cookware.

Dedicated to one of the darkest moments in Irish history.

These magnificent city walls rise from the barren sun-baked Spanish plains like something straight out of a fairytale.

An autonomous republic of Orthodox monks.

The ruins of an abandoned medieval city where the last Byzantine emperor was crowned.

Hideout of thieves, monks, and goat-footed gods.

Painstakingly built dioramas sit unnoticed in a Boston office building.

Off a hiking trail in Rhode Island stands a picturesque memorial to a long-forgotten war.

A layered tribute to the work of mosaicist Isaiah Zagar.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

Ancient paintings known as the "Sistine Chapel of Cave Art."

Beneath the city of Lourdes, France is a massive, concrete church.

The world's most famous cheese caves.

French commune at the heart of conspiracies.

This French castle is said to have once held the Holy Grail but is now a gorgeous mountaintop ruin.

A 14th century bridge built as a fortress, where the devil lurks on one of its towers.

Historic medieval fortified city in southwest France.

Beautiful carved tunnels.

Ride the subways of yesteryear.

A surrealist timepiece by the artist of melting clocks.

A tiny microvalley etched into the side of Knocknarea Mountain hides another world.

A mysterious chasm in the heart of the ancient Roman Forum, the Lacus Curtius was once believed to be a gateway to hell.

One of the few remaining carousels built by master amusement park carver Charles I.D. Looff.