Calisia

Calisia was " Geographike Hyphegesis ' to 52 ° 50 'north latitude ( actually: 51 ° 47') as a" city " in Germania around the year 150 AD by the Alexandrian geographer Claudius Ptolemy in his work mentioned and was very close to the contemporary Polish city of Kalisz on the Prosna. It was one of the places which was known to the Greeks and Romans through their trade with amber from the Baltic Sea, then called Mare Suebicum. Large quantities of Roman coins have been found in the north, where the branches ( Baltic ) amber fished on its coast. On the amber routes were transported to amber to Italy, Greece and even to Egypt.

In the year 1000 AD, the area around Calisia of Mieszko I and his son was taken Boleslaw I.. Nearby become the town center of Kalisz, which is now known as the oldest city in Poland.