The Narrow-Gauge Railway Museum in Sochaczew is one of the few places in Europe where you can find such a large number of narrow-gauge railway vehicles. The facility is located on the site of the former Sochaczew District Railway station and features the largest collection of this type of rolling stock in Europe. The open-air part of the museum currently includes 163 units of narrow-gauge rolling stock and over 50 more are awaiting maintenance at the back of the museum. Visitors can admire the collections of historical objects in the exhibition halls documenting the daily functioning of narrow-gauge railways in Poland over the centuries. In the summer season - from April to October - the Museum organises tours down the narrow-gauge railway track to the Kampinos Forest.
Until 1986, the narrow-gauge railway functioned as a normal railway line, connecting Sochaczew with Wyszogród. The railway line has existed since World War I and was initially used to transport timber from the Kampinos Forest, which was needed for the reconstruction of Sochaczew after the damage of the war in the years 1914-1918.