Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

Commonly acknowledged as the only public monument to the Devil himself.

The Habsburgs' royal collections of art and wonders.

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

Ancient burial grounds of the wealthy.

Sweden's "good old days" painstakingly re-created in a model village.

Early habitat dioramas and home of the elusive gaff, the skvader.

It houses the remains of a 17th-century version of the Titanic.

The second oldest anatomical theater is housed in a museum of curiosities.

Dr Barnes' $25 billion private collection of art and arboretum.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

A marble Lucifer hides behind the pulpit of this Gothic cathedral.

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

Macabre astrological automaton clock dating to the late 1400s.

This historic toy museum brings a little whimsy to a city not usually remembered for such things.

This abandoned coliseum was intended to be a grand Nazi rallying ground before it was halted at the end of the war.

Berlin's oldest surviving academic architecture hosted decades of animal dissections.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

An indoor miniature village and labor of love for Laurence Geiringer, a model railroad enthusiast.

A toxic ghost town sitting atop a massive coal fire.

A sprawling Baroque park with 300-year-old hydro-pneumatic waterworks.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

Renaissance hospital featuring a rotating door into which unwanted babies were dropped.