Thessaly became part of the modern Greek state in 1881, after four and a half centuries of Ottoman rule. Since 1987 it has formed one of the country's 13 regions and is further (since the Kallikratis reform of 2011) sub-divided into five regional units and 25 municipalities. The capital of the region is Larissa. Thessaly lies in northern Greece and borders the regions of Macedonia on the north, Epirus on the west, Central Greece on the south, and the Aegean Sea on the east. The Thessaly region also includes the Sporades islands.