Agrinio (Greek: Αγρίνιο, Latin: Agrinium) is the largest city and municipality of the Aetolia-Acarnania regional unit of Greece, with 106,053 inhabitants. It is the economical center of Aetolia-Acarnania, although its capital is the town of Mesolonghi. The settlement dates back to ancient times. Ancient Agrinion was northeast of the present city; some walls and foundations of which have been excavated. In medieval times and until 1836, the city was known as Vrachori (Βραχώρι).