Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

The topiary maze at the Habsburg hunting lodge.

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

Over 50 exquisite hand-painted Renaissance maps decorate a Medici storage room.

In the best of all possible worlds, everyone will get a chance to see this statue in which Voltaire's heart is interred.

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

One of Catholicism's four major basilicas has a series of papal portraits that are said to predict the end of the world.

This ancient Roman prison is decorated with an upside-down cross not as blasphemy but as saintly tribute.

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

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

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

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

Rome’s legendary peephole vista is also a former Crusader stronghold.

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

2300-year-old Roman road connecting the empire.

Architectureal fantasy quarter of Rome.

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

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

Italian poet Dante Alighieri is entombed in this small mausoleum in Ravenna, and his hometown of Florence has never been too happy about it.

Gods clash with machines in a power plant regenerated as a museum.

Pilgrimage site for star-crossed lovers.