Museum dedicated to literary greats of the Romantic Period is also the home in which Keats met his untimely end.

This beautiful park on the outskirts of Rome protects the ruins of two colossal ancient aqueducts.

The martyr's wax-enhanced skeletal remains lie preserved in a glass case in the Santa Maria della Vittoria in Rome.

Installed in an act of one-upsmanship, the annual sundial in this church is also a symbolic victory for the Gregorian calendar.

This former Roman Catholic Church still contains the embalmed hearts and organs of 22 popes.

Jesus' footprints and the first catacombs in the world.

The engineering wonder and pleasure dome of a much-maligned emperor still holds undiscovered secrets.

The skull of the patron saint of lovers lies in the Basilica di Santa Maria in Cosmedin—maybe.

The final resting place of the poets Shelley and Keats.

2300-year-old Roman road connecting the empire.

The underground sanctuary of a mysterious ancient cult.

The yawning maw of this pagan visage is said to bite off the hands of liars.

Architectureal fantasy quarter of Rome.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

The headless bodies of more than 1,300 guillotined victims of the Reign of Terror are buried here in mass graves.

This museum in a Paris apartment gives a unique look at the iconic French singer's life.

The approximate spot where the last Grand Master of the Knights Templar was put to death.

A beautiful Victorian statue shows France's enduring love of the rhinoceros.

The final resting place of the "father of special effects."

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

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

A subterranean shelter remains intact under a busy Paris railway station.

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

A museum on the history of Paris, including a set of Napoleon's toiletries, Proust's room, and relics of the Revolution.