These paved rills bring freshwater into Altstadt and could spell wedding bells for whoever stumbles into the waters.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

A long-buried ancient ruin unearthed right in the middle of the city.

San Gennaro, the patron saint of Naples, greets pedestrians between these narrow city streets.

This peculiar Italian elevator runs both horizontally and vertically.

This zoological museum began as the first great curiosity cabinet.

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

A 1,000-year-old church holds the bones of the Christian martyrs who died hiding inside it.

Every day is like Christmas on this street where the traditional Neapolitan nativity scene comes to life.

Thousand-year-old Viking runes adorn an ancient Greek lion at the entrance to the Venetian Arsenal.

A small window on Via Piella offers a lovely and rare peek at Bologna's lost canals.

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

Southern Italy's spinning top village.

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

Medieval torture techniques with a modern conscience.

An underground paleo-Christian burial site composed of the remains of several cemeteries and Basilicas.

This shining multicolored metro station deep under Naples is said to be the most beautiful in Europe.

The martyr's wax-enhanced skeletal remains lie preserved in a glass case in the Santa Maria della Vittoria in Rome.

Pilgrimage site for star-crossed lovers.

Skulls from the plague of 1656 and World War II bombings are united by a cult dedicated to caring for the ancient dead.

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."

This historic covered bridge contains a series of macabre paintings that communicate one thing: everyone dies.

A once-thriving hotel in the Swiss Alps couldn't compete with climate change.