This enormous secondhand bookstore inside a Victorian train station sparked the "Keep Calm and Carry On" craze.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

This restaurant was removed from the famed sister ship of the Titanic and placed within a hotel.

The burial place of an obscure North African saint was turned into a macabre body preservation factory for the 17th-century Neapolitan elite.

This large sand dune in the Netherlands is home to wind-whipped trees with "floating" roots.

The world's oldest Jewish library was founded by Sephardic Jews in 17th century Amsterdam.

A Portuguese Jewish cemetery filled with stunning grave monuments that date back to 1614.

These blingy, baubled skeletons lie in glass boxes inside a baroque Bavarian church.

A 200-year-old collection of oddities and medical paraphernalia.

The elegant manor house where Kaiser Wilhelm II lived in exile after World War I.

This public library and its impressive collection of academic books have not changed since the 17th century.

Eight naturally mummified bodies in glass coffins are housed in an underground crypt.

Macabre symbols of death and mummies on display set the tone of this Italian purgatory church.

This monastery built into a cliff hides a perfectly preserved hermit in a glass coffin.

A 2017 crowdfunding campaign saved this historic castle from being destroyed.

These 17th-century mummies are no longer naturally preserved, but remain on display today.

This modern French ossuary contains the jumbled bones of 130,000 WWI soldiers.

An ancient ossuary in Rouen.

The personal charnel house of Anton Bruckner.

Mysterious painted skulls in Moravia.

The remains of 40,000 humans, meticulously stacked in a tiny churchyard shed.

The walls and ceiling of this Polish church are decorated with thousands of skulls, with another 21,000 skeletons just below.

A house of bones — but nobody is quite sure to whom they belong.

Underneath this small church are 15,000 bones, arranged by an obsessive academic.