The history of the wetland park

The current Peltosaari was a field owned by Paloheimo until the end of the 1960s. During the Winter War, the area was heavily bombed because the Russians thought it was an airfield.  

A pool was dug at the bend of the Vantaanjoki, which served as Riihimäki's swimming facility until 1955, when the current land-based swimming pool was completed. The Bad Segeberg pond is now on the site of the old swimming facility.

In 1965, the town of Riihimäki bought an arable area and the following year a Nordic competition was held to design the area. The plan for Peltosaari was completed in 1970 and the first apartment building rose in the area in 1973. At the same time, the channel of Vantaa was straightened to run next to VI Oksanen street.

At the end of the 1960s, topsoil from the construction sites in the city center and later from the construction area of ​​the Peltosaari bridge, as well as top soil from the apartment building area, were moved to the site of the current wetland. The Workers' House Museum was moved to its current location in 1969. 

Wetlands were formed in the depressions left between the construction embankments, the water of which is mainly groundwater. One of the wetland pools was later drained by breaking the embankment parallel to the track, so that the water could flow into Vantaa. In the early days, muddy water pools were especially popular resting places for waders on their migration journeys. 

Along with the growth of trees and shrubs in the area, the bird life in the area has also changed. The wetland has still remained diverse, containing several ecosystems.  

The Kosteikkopuisto area was a wasteland until the Riihimäki region's nature conservation association planned and implemented the first nature trail in the area on the city's talkootu in 1998. In 2000, the trail was expanded by building pine trees over the largest wetland to its current form. In 2022, the nature trail was renewed as a participative budgeting project.