The Verbano Cusio Ossola Province is located in the central western Alps and has had great importance for geological studies about the Alps since the last century.
The Alps are a double-vergent chain : an European one and an African one, the southern Alps divided by an important tectonic line named Lineamento Periadriatico or Insubric Line...

Basilica di San Paolo Fuori le Mura, Rome
In the eighteenth and nineteenth century the Verbano granites were also used for plinths, steps, doorways and floorings.
There are manufactured articles and handiworks in all the Piedmont, but even in Rome where there is the Basilica di S. Paolo Fuori le Mura (St. Paul's Outside the Walls), made in white Montorfano granite.