Kalisz (Kalisch) is a city in central Poland, and the second-largest city in the Greater Poland Voivodeship, with 97,905 residents (December 2021). It is the capital city of the Kalisz Region. Situated on the Prosna river in the southeastern part of Greater Poland, the city forms a conurbation with the nearby towns of Ostrów Wielkopolski and Nowe Skalmierzyce.
Kalisz is one of the oldest cities in Poland and one of the two traditional capitals of Greater Poland (alongside Poznań). It has served as an important regional center in Poland since the Middle Ages as a provincial capital and notable royal city. It is one of the historical burial sites of medieval Polish monarchs and dukes of the Piast dynasty and the site of a number of significant events in Polish history as well as several battles. Since the 19th century it has been the center of an industrial district. It is the cultural, scientific, educational and administrative center of the eastern and southern Greater Poland region, and the seat of Roman Catholic Diocese of Kalisz.
There are many artefacts from Roman times in the area of Kalisz, indicating that the settlement had once been a stop of the Roman caravans heading for the Baltic Sea along the trade route of the Amber Trail. Calisia had been mentioned by Ptolemy in the 2nd century AD, although the connection is doubted by some historians who claim that the location mentioned by Ptolemy was situated in the territory of the Diduni in Magna Germania.
