View the ancient remains of buildings and the ancient "River of Hades" before hopping on a train.

Legend says it was constructed with the destroyed pillar of an ancient Greek Temple.

This historic structure has been used as a mosque, a barracks, a prison, a school, and a bakery.

An ancient octagonal weather station named for the eight Greek gods of wind.

Legend says this sacred tree was a gift from goddess Athena.

One of the greatest collections of coins in the world is housed in the former mansion of an archeological pioneer.

Where commuters walk through remnants of an ancient Greek necropolis.

An ancient site that has revealed incredible artifacts including portions of the Themistoclean Wall.

The ruins of an ancient Roman tomb hidden in the basement of a trendy clothing store.

Scars of this building's past life as a violent prison still cover its walls.

The location of this small park was once the site of an infamous public morgue.

A letterpress workshop committed to the art of printing, with unique and creative designs.

France's most famous cemetery, with some of its most curious tombs.

A phantasmagoric tomb honors a Belgian artist-scientist's contributions to the world of spooky entertainment.

The tomb of history's greatest potato promoter is surrounded by tubers.

A museum dedicated to one of Paris’s most famous residents, tucked into a corner of one of the city’s most famous squares.

Site of a classic 19th-century physics experiment to prove the earth is rotating.

The remaining relics of the patroness of Paris lie in a chapel under a striking double spiral staircase.

This demon atop the Notre-Dame de Paris looks utterly bored.

A mechanized clock where a man fights off a dragon, crab, and rooster.

A series of abstract, silly sculptures represent the works of a great modern classical composer.

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

This surreal statue brings a famous French novel about a supernatural cad to arresting life.

The celebrated eyesore created by starry-eyed sweethearts.