Liguria has a peculiar country's geology. It has a slim arched shape closed between mountains and sea and the tipical terraces with drystone walls used by every single Ligurian civilization between Prehistory to modern era.
The region has been inhabited since Paleolithic and on "riviera di Ponente" you can find "Balzi Rossi" caves, one of the most important Prehistoric place ever found. By Iron Age local groups started to settle on top of the hills giving birth to those villages so-called "castellari".
Genoa has been a flourishing and busy port since ancient times. When Romans arrived, they subdued the whole region with Emperor Augustus and started a very important project of building restyling in every single city. Unfortunately due to barbaric invasions all the cities moved towards decadence and never came out.