Pompei, in English also Pompeii is a city and commune in the Metropolitan City of Naples, Italy, home of the ancient Roman ruins of Pompeii tha…Pompei, in English also Pompeii is a city and commune in the Metropolitan City of Naples, Italy, home of the ancient Roman ruins of Pompeii that are part of the UNESCO World Heritage Sites. Modern Pompei was founded in 1881 after the building of the Shrine of Our Lady of Pompei by the lawyer Bartolo Longo.