A fake Transylvanian castle houses a cathedral of antlers.

The solemn exterior conceals an opulent interior of this 17th century church.

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

Thousands of slain Soviet soldiers are buried within the shadow of this enormous obelisk.

The largest fountain in Bratislava.

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

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

Also known as the Blue Church, the building was consecrated to the daughter of Andrew II.

Relive a Polish uprising via an enormous, century-old cyclorama.

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

The silly symbol for an underground protest group is now scattered around the city.

A 90-ton, gravity-defiant steam locomotive shoots for the skies in this bizarrely beautiful public artwork.

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

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

An enormous and lavish Gothic church in Czechia.

A series of playful yellow penguins share a serious message about the environment.

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

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

This doorless 20th-century elevator doesn't stop or slow down.

This automated sculpture of two men peeing will spell out text messages with their micturition.

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

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

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.