Jule Körner's house full of bizarre architectural details.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

Pompeii's less famous neighbor is still revealing her secrets.

A large grotto built in the 16th century amidst Florence's famous Boboli gardens.

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

This ultra-modern burial building would have stacked the dead like a giant filing cabinet.

Pilgrimage site for star-crossed lovers.

Once the home of a hermetic monk, this cave now houses a small church.

Budapest's Communist-era statues, banished to the suburbs.

Museum dedicated to the terror regimes of Hungary.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

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

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

An underground city of salt.