The earliest information about Portofino's San Giorgio castle dates back to the first half of the 16th century. The appearance and function of the castle was ever-changing throughout the centuries. Today it is adapted as a museum of historical relics and works of art.
The grey slate covers various types of roofs; the conical keep, the pyramid roof of the two turrets of this latter and lastly the pavilion roof which covers the rest of the complex.
A bench between the two turrets is made of slate slabs. This is one of the various interventions made when military use was stopped and it became a civilian residence. "Slate" enters the context with rationality, realising the fusion between the architectonic element and the greenery of the surrounding nature.