Grottammare is a town and comune on Italy's Adriatic coast, in the province of Ascoli Piceno, Marche region. It is one of I Borghi più bell…Grottammare is a town and comune on Italy's Adriatic coast, in the province of Ascoli Piceno, Marche region. It is one of I Borghi più belli d'Italia. The town is crossed by the 43rd parallel north. Economy is mostly based on summer tourism; other sectors include food and vegetables production, mechanics, and commerce.