Portoferraio's a town and commune in the province of Livorno, on the edge of the eponymous harbour of the island of Elba. It's the island's largest city. Because of its terrain, many of its buildings are situated on the slopes of a tiny hill surrounded on three sides by the sea. History It was founded by Cosimo I de' Medici, Grand Duke of Tuscany, in 1548, with the name of Cosmopoli ("Cosimo's City"), to balance the presence of the Spanish citadel in Porto Azzurro. It'd three forts (Forte Stell… (More on Portoferraio)