Touching this little fossil embedded in the wall of a grand mosque-cathedral may make your wishes come true.

This home designed for chocolate magnate Antoni Amatller is an exquisite treasure-box of Catalan Modernism.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

Largest necropolis in the Mediterranean.

A detailed pachyderm supports Rome's smallest Egyptian obelisk.

The only visible remains of this ancient Greek underground temple is its roof protruding from the earth.

A nearly lost tribute to an 11-year-old boy killed during a World War I homecoming parade.

Legend says entire herds of cattle have disappeared within this boulder-strewn landscape.

Psychoanalyst Carl Jung reported a paranormal experience after visiting this mosaic-lined Roman baptistry.

A medieval, mosaic-lined baptistry built by a heretical Christian sect.

Legend says this mysterious stone head belongs to a woman who was petrified by an alchemist.

The best preserved Paleochristian basilica in Rome hides a number of oddities and secrets.

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

In a city that boasts four separate inclined cable railways, this is one of the busiest funicular lines in the world.

The remains of an ancient Roman city are hidden underneath Bologna's beautiful public library.

This amazingly well-preserved villa just outside Pompeii boasts rare examples of ancient Roman paintings.

This palatial spiral staircase was so unusual the name "snail" was given to the noble family who built it.

A dismembered holy head stares out from her beautiful reliquary at the St. Dominic Basilica.

These medieval skyscrapers dominate the skyline of this small Tuscan town.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

A submerged archeological park still holds the wonders of a Roman Sodom.

Twelve grave-faced marble angels guard the emperor's tomb at Les Invalides.

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

Meant to be a lavish presidential home, the palace became a symbol of the fall of South Vietnam.