Europe’s oldest natural human mummy.

According to the local folklore, the myriad colors of this lake are the result of a lovelorn wizard's blunder.

These delicate sand pyramids look like naturally occurring gothic spires.

Crumbling ruins of the thermal baths that once attracted royals and aristocrats from throughout Europe.

A line of abandoned, alien-like fortresses dot the mountains of North Italy.

This narrow fjord-like bay is the largest ria in the Mediterranean Sea.

These pools have been abandoned for over 20 years.

One of the largest caves in the world open to the public.

A star-shaped fortress town fort built in the geometric model of the Renaissance utopian city.

This overgrown mountain village has been abandoned for nearly a century.

The hilltop ruins of a border fortification in the Italian Alps that was much fought over.

With its mine closed, this old village is starting to resemble a ghost town.

A road runs through the middle of this small Austrian chapel.

This "mathematical tower" was an observatory, early skyscraper, and place to reflect on all of nature and the cosmos.