This historic, palatial theater is now one of the world’s most beautiful bookstores.

Xul Solar was an artist of alternate worlds, inventor of languages, and dreamer of utopias.

A beautiful young girl said to have been buried alive in her coffin…

A nearly 500-year-old sculpture depicts a man eating a sack of babies, and no one is sure why.

The encased skull that is widely believed to belong to St. John the Baptist.

Science fiction's grandfather has a fittingly marvelous tomb.

Guitar made of trees, dedicated to a man's lost love.

The clients of these mysterious hand-crafted funeral cars took their last ride in style.

Indents in the pavement are all that remain from a grisly death machine in Paris.

The largest medical and anatomical collection in France lies hidden from the public.

These "anatomical machines" are only one of the many strange items in this Italian crypt.

The once forbidden "secret cabinet" of erotic art from excavations of Pompeii and Herculaneum.

The curious underground history of keeping Paris clean.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

A hyper-luxurious, 12,000- square foot home might be buried beneath Queens, still waiting to protect you from nuclear missiles.

Hundreds of secret cabinets built into the walls of legendary poisoner's private work room.

This museum started as a collection of Manhattan Projects and continues to add exhibits as they are declassified.

A beautiful and classically designed villa, with an hourly infestation of monsters.

This 19th century cyclorama acts like an analogue time machine to a different era.

Thousands of costumed dolls fill one of the world's creepiest museums.

Astounding collection of coin-operated games and automata.

An often-shuddersome journey into a low-tech, robotic themepark.

This Wild West attraction is alive with glitching automatons.

This Netherlands museum holds a gloriously mechanical collection of ornate musical automata.