Płock - Vistula

The town on the Vistula River has been known since the 9th century. In 1009 a Benedictine monastery was founded here. King Bolesław I the Brave built the original fortifications on the Cathedral Hill overlooking the Vistula River. In 1075, the city became the seat of a bishopric. From 1079 to 1138, during the reign of Władysław I Herman and Bolesław III. Wrymouth, the city was the capital of Poland. In 1144 the Płock Cathedral was completed, and in 1180 the first school in Poland was opened in the city, which still exists today as the Liceum Małachowianka.

The 16th century was the golden age of the city before it suffered great population losses due to plague, fire and wars. In 1657, during the Second Northern War, the Swedes destroyed Płock, including the castle, but the population rebuilt it and recovered. In the late 18th century, the old city walls were torn down and a new town was built, where many German immigrants settled.

During the second partition of Poland in 1793, the town was annexed by Prussia. In 1815 it became part of Congress Poland and later was annexed completely by the Russian Empire. In 1939, after the invasion of Poland, the city became part of the German Empire in violation of international law.