The only things left in this abandoned Latvian graveyard are a mysterious stone and a ghost story.

Launch site for nuclear war against Western Europe.

The gutted remains of this Estonian mansion are a monument to a tragic love.

This abandoned fighter jet launch center is now a haunting street racing course.

An alien church provides much needed silence in the midst of a Finland shopping center.

Tucked away in a small German apartment is an eclectic museum devoted to West African vodun culture.

A giant gorilla made of used car tires used to sit sentinel over a Helsinki college campus.

Villas that once served as playgrounds for the rich now fall away in decay.

A subterranean house of worship carved right out of the bedrock.

This intricately spiralling forest was created as a monumental work of art.

A Hungarian pharmacy museum with a box full of mummy powder.

Uh, pardon me, ma'am, but I couldn't help noticing that there's a Columbo statue in the middle of Budapest.

The mummified right fist of a 1,000-year-old saint-king sits inside an ornate golden reliquary.

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

Hungarian self-built castle.

Apartment complexes built into huge repurposed natural gas tanks.

The former private quarters and office of Dr. Sigmund Freud now hosts a museum housing the works of the founding father of psychoanalysis.

A patriotic medieval knight in driven-nail armor raised money for widows and orphans of WWI.

Handsomely crafted representations of our round planet.

Op-art architecture designed for happiness.

A spherical "micro-nation" in the heart of Vienna.

This Austrian museum celebrates the work of famous forgers and their inimitable imitations.

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

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