The oldest of Venice's plague quarantine stations, designed to keep the medieval city safe from disease.

This abandoned island off the Venetian coast has been a radical monastery, a political prison, and a secret Nazi base.

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

A significant example of Czech cubist architecture—a style you won't find anywhere else in the world.

Its frescoes depict the likeness of Marshal Tito, Karl Marx, and Friedrich Engels burning in hell.

This exclusive resort has completely covered a tiny Balkan island in a 5-star warren of guest rooms.

These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

The castle in the romantic landscape of Podyjí houses what may be Europe's largest collection of taxidermy dogs.

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

This medieval castle was reconstructed by Carlo Scarpa.

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

The only museum with its curator—and her pets—buried inside.

A sinister pyramid in the Frari contains the heart of the famous neoclassical sculptor.

This fortress dates back to the 6th century and is also the site of a controversial abandoned restoration project.

Its interior is adorned with some of the best examples of early Christian mosaics.

Art Nouveau painter Alphonse Mucha spent 18 years creating these monumental paintings of Slavic history and mythology.

Tiny communists hammer away on the Olomouc Astronomical Clock.

The sanctuary holds what was once believed to be the saint's incorruptible tongue.

An ornate plague column – built to celebrate life – claimed the lives of numerous artisans during its construction.

Unique house covered in a nightmarish mural of demons, ghosts and monsters.

The deepest sinkhole in Central Europe comes with a grisly tale and an unusual nickname: “The Stepmother Abyss.”

Enormous sandstone towers loom within a Czech forest.

A church of bones, decorated with 40,000 human skeletons.

A quasi-futuristic roof sits atop a medieval Bohemian monastery damaged during World War II.