Silver-mining town in a collapsed volcano
A UNESCO town built inside the caldera of an extinct volcano, once one of the richest silver-mining centres in Europe and home to the world's first mining academy. Steep lanes, two castles, and a chain of artificial lakes the miners dug to power their machinery.




Signature local dishes worth seeking out.
Walkable but steep; car useful for the lakes.
The underground mine tour issues overalls and a lamp and goes into real 17th-century workings — book ahead in summer.
Very safe.