A plaque marks the spot where the saint was shoved off the Charles Bridge and into the river.

The slender brass strip in Prague's Old Town Square was used to tell time from 1652 to 1918.

The oldest garden in Prague, once part of an medieval orchard.

This spooky statue sits outside a famous Prague theater.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

This walkway is so narrow it needs its own light to stop pedestrian traffic jams.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

Macabre astrological automaton clock dating to the late 1400s.

Countless grotesque faces stare out from this eerie Prague art wall.

The 18th-century inspiration behind Harry Potter's Sorting Hat.

Inscribed on the gate are the names of 29 figures from the University's first five centuries.

This Scottish museum is the only one in the world to focus not on one religion but all of them.

A 200-year-old collection of oddities and medical paraphernalia.

A scattered trail of street art adds a pop of color to the city's stark structures.

"Respectful to the dead, safe and sanitary to the living, dedicated to the Genius of Memory..."

Before it was buried by volcanic ash, this fast-food restaurant fed the hungry hordes of ancient Rome.

Erotic art covers the walls of the largest ancient pleasure palace.

The walls and streets of the ancient city are peppered with penises.

Ancient snack bar of the Roman Empire re-opened.

The once forbidden "secret cabinet" of erotic art from excavations of Pompeii and Herculaneum.

This monumental fountain has moved around the city multiple times.

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

Hidden beneath a beautiful overlook you’ll find the history of the city depicted in comic strip format next to a pay toilet.

Ring the bell to enter a bar that looks equal parts museum and old curiosity shop.