Macabre astrological automaton clock dating to the late 1400s.

A mocking tribute to the past and modern leadership of Prague.

Monument to a suicide protesting the Soviet invasion.

A majestic lion statue guards this Parisian botanical garden, and feeds on an unsettling item.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

A Parisian exterminator's shop whose storefront displays stuffed rats hanging from traps.

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

This bridge was constructed from the rubble of the infamous Bastille.

This massive library holds what was once the largest book collection in the world.

Go inside to really appreciate this 500-year-old technological masterpiece.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

The bomb-ravaged remains of of a colossal Neptune.

A lover's walk between hilltop towns, decorated with graffiti love notes.

The oldest operating pharmacy in the world features 800-year-old recipes.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

Rome's semi-secret peephole vista is also a former Crusader stronghold.

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.

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

Hidden beneath the famous St. Peter's Basilica is a veritable city of the dead that may hold the remains of St. Peter himself.

The former home of an Italian artist is now a shrine to his ambitious works.

Architectureal fantasy quarter of Rome.

A sculpture serving as an homage to Pope John Paul II.

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