2300-year-old Roman road connecting the empire.

This hill made entirely of ancient Roman jars was simply a garbage dump to the people of the time.

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

A fairy tale castle in modern Rome.

More sculpture than building, this architecturally significant temple was built on the spot of Saint Peter's crucifixion.

Architectureal fantasy quarter of Rome.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

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

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

Built to repay the sins of the father, this church is home to one of the most valuable works of Western art.

The small peaceful island off the Venice tourist circuit is where the city began more than 1,500 years ago.

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

A military museum, art park, mausoleum, and architectural oddity all on one fascist's estate.

Before there were doorbells this bronze ear was installed for visitors to announce their arrival.

Sitting on an Italian hilltop is this surreal fortress built by the mad inventor of electrohomeopathy.

Hundreds of secret cabinets built into the walls of legendary poisoner's private work room.

At Monet's beloved home you can still see the Japanese bridge, waterlilies, and weeping willows that were the subjects of some of his most iconic paintings.

This Parisian café sticks almost exclusively to an ethos of reuse.

The ruins of a Duke's bucolic dream, where camels once roamed alongside "Dutch" windmills and faux-Italian vineyards.

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

Paris' linguistic guide to the international language of, yes, love.

This Paris art space celebrates the creativity and ingenuity that springs from abject poverty, especially in Africa.

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

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