Zakroczym (; Zakrotshin) is a small town in the Masovian Voivodeship, Poland. It is located at around . The Vistula River flows through the town. Zakroczym has a long and rich history: in the Kingdom of Poland and the Polish–Lithuanian Commonwealth, it was the capital of an administrative unit (ziemia), part of Mazovian Voivodeship. Also, Zakroczym was a royal town of the Crown of the Kingdom of Poland. The town lies at the intersection of two main roads - national road 62, and national road 7. Name The name of Zakroczym comes from ancient Polish word zakrot, which means river crossing. Originally, the town was located closer to the Vistula river, and was called Kroczym or Kroczyn. Due to numerous floods, Zakroczym was moved to a higher location. History c. 1155 - first mention of the gord and settlement of Zakroczym, property of Benedictine Monastery from Mogilno, 8 June 1335. Mazovian dukes Siemowit II and Trojden I renew here truce with Grand Master of the Teutonic Knights, Dietrich von Altenburg, 1374 - Zakroczym becomes capital of a land, part of Masovian Voivodeship, and remains so until 1795, 1422 - Duke of Mazovia Janusz I of Warsaw grant town charter to Zakroczym, 1656-1657 - Zakroczym is occupied by Swedish forces (see Swedish invasion of Poland). The town is partially destroyed, 1709 - Zakroczym is burned by Swedish troops during the Great Northern War, 1757 - construction of a monastery Order of Friars Minor Capuchin begins, 1793 - the town is seized by the Russians, 1795 - Zakroczym becomes part of the Kingdom of Prussia in the Third Partition of Poland, 1806 - French forces cross the Vistula near Zakroczym, before the Battle of Pułtusk, 1807 - Zakroczym becomes part of the Polish Duchy of Warsaw, 1815 - Zakroczym becomes part of Congress Poland, 1831 - after Russian capture of Warsaw, meetings of Polish government and Sejm take place at the monastery, 1883-1888 - construction of Fort 1 Zakroczym, first ring of fortifications of the Modlin Fortress, 20 August 1915 - Russian garrison of the fortress capitulates to Germans, 1918 - Poland regains independence after World War I, Zakroczym restored to Poland, 10–28 September 1939 - Battle of Modlin between Poland and Germany during the German-Soviet invasion of Poland, which started World War II, 28 September 1939 - Massacre in Zakroczym, Wehrmacht soldiers kill around 600 Polish civilians and prisoners of war