Pacyna is a rural municipality in the Masovian Voivodeship, within the Gostynin County, with its administrative seat located in the village of Pacyna. The history of the municipality dates back to 1430, when it was first mentioned. Pacyna obtained town rights in 1509, but a fire in 1519 significantly impacted its development. In the 18th century, Pacyna came under Prussian rule, and after Napoleon's defeat in 1813, it became part of the Polish Kingdom. During the 19th century, the municipality was known for its agricultural farms, including cattle and horse breeding. During World War II, Pacyna faced various repressions, and after the war, it was reintegrated into Poland. The municipality has a diverse surface structure, covering an area of 90.85 km², with agricultural land dominating (84%) and forests covering 7%. It is characterized by gentle terrain, which favors agricultural development. The soils in the municipality are varied, with an average bonitation index of 1.04. Pacyna cultivates agricultural traditions, and its social structure is primarily based on family farms. Among the historical monuments of the municipality are the manor complex in Czarnowo with a park dating back to the early 19th century, the Gothic-Renaissance church in Luszyn from 1595, and the ruins of the manor complex in Model. Pacyna is also a region with rich natural heritage, including special bird protection areas and the Landscape Park of the Słudwia and Przysowa Valleys. The communication axis of the municipality is the provincial road No. 583, which connects it with other towns. Modern Pacyna combines agricultural traditions with a fascinating historical heritage, making it a place with significant tourist and cultural potential.