Association Ūdenszīmes and its leader Ieva Jātniece manage the building of the former Kaldabruņa primary school, where the association has developed the exposition of Meadow Museum. One of the annual events organised by the association is the Hay Days in the apple garden of the school. This is the time, when creative plein airs are organised in order to introduce the visitors to the diversity of Latvian meadows, while modern pieces of art are made from hay and plants.
The village of Kaldabruņa in the Jēkabspils Adminitsration District has a former elementary school that is currently managed by the Ūdenszīmes organisation. The meadow museum exhibition is compared to a human life cycle, and visitors will see a Smilga exhibition, a childhood lighting objects, the Kadabruņa Māra belt in a hole in an oak tree, the Vārdnieki crown, the Pūra crown, and exhibitions of endangered and rare plants. The Kaldabruņa or Krievāni Māra belt is one of the greatest cultural and historical treasures in the administrative district because it is a unique ethnographic material. The belt is made of 52 ornaments, including 36 modified fire cross ornaments. Nothing of the sort can be seen in Latvian ethnography. The Stāmeriena wrap has 19 modifications of the fire cross, while the belt has blue and yellow ornaments, with red and green colours on its edges. At the end of the belt is a complicated weave of little pearls and fringes. Authentic copies of the belt have not been presented in public, and this unique material has also not been seen in the digital environment. The original belt was received by ethnographers in the late 19th century from Māra Krievāne from the Mačulāni homestead in Kaldabruņa. It is housed at the Latvian Museum of History, which also has the only known copy of the belt. Decoding of the ornaments can be found in a book about Latvian ornaments. The building that is managed by Ūdenszīmes also contains an unprecedented art venue -- the Šķūņa Art Gallery. Also of interest is a hay museum and the stories about the locations.