Enormous sandstone towers loom within a Czech forest.

Macabre museum devoted to historical Viennese murders.

One of the best collections of wax anatomical models in the world.

Apartment complexes built into huge repurposed natural gas tanks.

Op-art architecture designed for happiness.

This former insane asylum now holds a pathological anatomy museum.

The resting place for anonymous victims of the Danube's dark waters.

This series of Baroque passageways in Vienna's cultural center mix old architecture with modern art.

The beautiful baroque library of the Hapsburg empire.

This southwestern historic site was designed and built by an artist who wanted his work to "feel at home."

During the 19th-century, this park was a vital trading fort.

This mosaic-covered bar is brimming with curated curios.

The crumbling remains of the first Black-owned and operated hospital in Kansas City.

This abandoned prison castle has become an imposing gallery of graffiti art.

The first car-centric shopping plaza in the U.S. brought a little bit of Spain to downtown Kansas City.

This once rural mansion now sits in the heart of the city.

This Italianate Villa-style castle is pretty to look at, just keep off the private property.

Farms are serving pizza made from their own fresh crops, a growing trend in the American Midwest.

Homemade outdoor church and sculpture garden decorated with glass shards.

This sprawling building built in 1890 was one of Minnesota’s earliest and largest mental health facilities.

European castle ruins in an American state park are actually the product of death and grief.

This titanic Catholic church in Chicago is also a refuge of the fictional cult-favorite wizard detective Harry Dresden.

Orthodox church partially financed by Tsar Nicolas II.

These mansions date back to Chicago's days as a brewer's paradise.