A treasure trove of Renaissance-era funerary art in a Roman church built on top of Nero's grave.

The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.

A rather vulgar example of the transition from Latin to the Italian vernacular.

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

Brass cobblestones mark the places where individual Holocaust victims were taken from their homes.

The mystic whose incorrupt corpse still attracts the faithful.

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

One of several skulls claiming to belong to the beheaded St. John the Baptist is on display at this Roman church.

A Nesting Doll of Churches.

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

Charles Dickens described the concert room in this amazing Victorian hall as "the most perfect room in the world."

Architectural monsters are devouring this palace's every door and window.

A collection of objects supposedly singed by the hands of souls in purgatory.

This Roman arch marks the location of an ancient gate at one of the Seven Hills of Rome.

The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.

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

An alchemist's "magic door" stands in the middle of a Roman park.

A fantastical 13th-century fortification sandwiched by a modern hotel in central Brussels.

Created as a punny statement about genetic engineering this monstrous hybrid statue has become a beloved icon.

The red letters in the literary pavement leading to the library form a mysterious code.

From Tintin to the Smurfs, Europe's greatest graphic icons are celebrated in a grand Art Noveau gallery.

When you're a great Russian Tsar, even your vomit gets a statue.

Three floors of musical instruments coming from all corners of the world and hundreds of years of musical history.

Brussels' favorite peeing boy has a sister.