Opole is the biggest city in Opole Voivodeship in the southwest part of Poland. The German name of the city is Oppeln, and the Czech name is Opolí. The Oder River goes through the city. It has about 128,000 people living in it and is 149 km² in area. The mayor of the city is Arkadiusz Wiśniewski.
Opole is over 1000 years old. It was originally a Slavic town. In 990 it became a Polish city. During the Middle Ages it became a German city. It was called Oppeln for a long time. After the Second World War the city once again became Polish, and the German citizens were forced to leave. It has been called by its Polish name Opole ever since.