In the southern region of the island are the Mastichochoria (literally "Mastic Villages"), the seven villages of Mesta (Μεστά), Pyrgi (Πυργί), Olympi (Ολύμποι), Kalamoti (Καλαμωτń), Vessa (Βέσσα), Lithi (Λιθί), and Elata (Ελάτα), which together have controlled the production of mastic gum in the area since the Roman period. The villages, built between the 14th and 16th centuries, have a carefully designed layout with fortified gates and narrow streets to protect against the frequent raids by marauding pirates. Between Chios Town and the Mastichochoria lie a large number of historic villages including Armolia (Αρμόλια), Myrmighi (Μυρμήγκι), and Kalimassia (Καλλιμασιά). Along the east coast are the fishing villages of Kataraktis (Καταρράκτης) and to the south, Nenita (Νένητα).