Two stone columns flank the grand Venice square, but there were supposed to be three.

Go inside to really appreciate this 500-year-old technological masterpiece.

This Roman statue is missing a limb from when the Venetians stole it from Constantinople during the Crusades.

An extensive collection of reliquaries containing the bones of saints housed in the largest Catholic church in Venice.

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

Religious perseverance and cultural coexistence manifest in an architectural gem that multiple wars couldn't topple.

A war-torn Olympic relic is being overtaken by graffiti and nature.

This historic timepiece is thought to be the only public clock in the world that keeps lunar time.

This Croatian fairytale castle is slowly falling apart thanks to years of neglect.

This 135-year-old weather station studied the effects of the climate on human health.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

A striking public sculpture representing the period of martial law in Communist Poland.

Real bones which are said to have belonged to a Polish dragon.

This Polish cave has housed a dragon, a brothel, and an enduring legend.

Baroque celebration of the end of the Great Plague of Vienna.

Giant WWII fortresses that fired 8,000 rounds a minute, now home to thousands of pigeons.

Op-art architecture designed for happiness.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

This Slovakian statue of an emerging sewer worker might just be a bronze peeping tom.

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.

A Trabant car, a kangaroo statue, and a plethora of plants take over this abandoned-factory-turned-bar.

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

A museum dedicated to a secret military hospital hidden beneath a castle in Budapest.