All that remains of the fishing-vessel-turned-warship is its weathered hull.

A mysterious crater-like pond has a spooky tendency to empty and fill with complete disregard to rainfall patterns.

This 15th-century fortification was built to defend bunnies.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

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

A surreal statue honoring Prague's favorite literary son.

Macabre astrological automaton clock dating to the late 1400s.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

Throughout this shopping mall are medieval ruins that were discovered during the mall's construction.

Bullet holes in the church wall are a reminder of the violence that followed the assassination of a high-ranking Nazi officer.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

An ultra-modern diversity park in Denmark has turned an entire city block electric pink.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

A copy of the famous statue can be found in this Florence piazza, along with one of the most breathtaking views of the city below.

In Florence's great Duomo, a 26 foot fresco honors a mercenary famous for attacking Florence.

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.

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

A large statue of Pope Gregory XIII in Bologna was disguised as Saint Petronius to avoid destruction.

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

The sanctuary seems to either float atop the water or sink into the dirt, depending on the water level.