Lyon, France is home to two remarkably preserved Roman theaters, one dating back to 15 BCE.

Lyon's miniature version of the Eiffel Tower was built as a statement in support of French secularism.

For hundreds of years, automatons moving to metallic music have been marking the passage of time.

Hundreds of hidden passageways weave through the old quarters of Lyon.

Twelve grave-faced marble angels guard the emperor's tomb at Les Invalides.

Paris' fabled purveyor of exotic taxidermy and natural history curios.

The former home of France's controversial pop maestro is almost completely covered in ever-changing tributes and graffiti.

The celebrated eyesore created by starry-eyed sweethearts.

Large collection from the 3rd millennium BCE.

This pink watchtower served as the seat of the Greek government after independence from the Turks.

There are many Byzantine-era churches still standing in Athens, but this is the only one with a 2,500-year-old column rising through its roof.

This small 16th-century church in Athens is almost entirely surrounded by a modern building.

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

150 or so scrounged-up lamps, chandeliers, and lanterns light up this alley in central Athens.

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

The site where hundreds of Greeks were tortured by the Nazi secret police is now a cosmetics store.

The ruined doorway is a portal to the building's turbulent and torturous past.

This ancient hydrological marvel is now the base of a modern outdoor cinema.

The railway carts travelers to central Athens's highest peak, which offers stunning vistas of the city.

A sprawling collection of books and manuscripts about ancient Greece that would have put their famed libraries to shame.

The oldest standing Byzantine church in Athens is tucked within a monastery in the middle of an upscale shopping district.

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

This mystical orb covered in strange symbols is thought to have been used in ancient Greek magical rituals.

In one of the world's smallest countries, a royal's personal winery is open to the public.