Region of Peloponnese
The Peloponnese region was established in the 1987 administrative reform. With the 2010 Kallikratis plan, its powers and authority were redefined and extended. Along with the West Greece and the Ionian Islands regions, it is supervised by the Decentralized Administration of the Peloponnese, Western Greece and the Ionian Islands based at Patras. The region is based at Tripoli and is divided into five regional units (pre-Kallikratis prefectures), Arcadia, Argolis, Corinthia, Laconia and Messenia, which are further subdivided into 26 municipalities. The largest city of the region is Kalamata.