Zakroczym  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. 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.