An homage to the medieval rulers of Bulgaria.

This once-grandiose behemoth of a monument from the socialist era now sits quiet and closed up.

This 2,000-year-old Doric bridge is still open to pedestrian traffic to this day.

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

This community on a small Venetian island has taken to painting their houses in bright neon hues.

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

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

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

Over 100 towers were built in Bologna during the Middle Ages, but only 22 survive.

Legend has it this fountain built to symbolize the Pope’s power hides a strange secret concerning Neptune's manliness.

In the world's oldest university is a stunning 17th century anatomical theater carved from spruce.

A massive cave once a secret military base is now home to thousands of bats.

A Roman monument to their own civil engineering prowess.

17th century palace once a meeting place for politicians.

After sitting unused for decades, this abandoned communist infrastructure became a wildlife utopia.

Religious structure known for its sculpted details.

This Transylvanian church has changed its denomination four times.

This memorial to the victims of the Romanian Revolution of 1989 is often compared to a potato on a skewer.

The ancient Greek Titan guards this massive dam holding a lightning bolt to symbolize electricity.

Once the legendary capital of the Dacian Kingdom, this city has been reduced to mere ruins.

A medieval church built up to defend its village.

Romania's triumphal arch looks out over Bucharest.

Nine centuries-old fortresses guard the walls of this medieval Romanian city.

A fire once nearly devoured this gorgeous 14th-century Gothic cathedral.