This 135-year-old weather station studied the effects of the climate on human health.

Skulls and skeletons are omnipresent in this church dedicated to souls trapped in purgatory.

A labyrinth of ancient tunnels hidden below the city holds the ruins of 2,500 years of history.

A surreal botanical garden with an even more surreal tour guide.

In a city that boasts four separate inclined cable railways, this is one of the busiest funicular lines in the world.

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

This ancient village and its adjoining cemetery have a beautiful history of death and remembrance.

This Neapolitan exhibition hall grants weird and wonderful insight into the intricacies of human biology.