Wurmsbach Abbey is a monastery of Cistercian nuns located in Bollingen, a locality of Rapperswil-Jona. Count Rudolf of Rapperswil gave his castle of Wurmsbach together with a considerable area of land in 1259 for the foundation of a religious house and the abbey was established. It was initially a dependency of the Cistercian monks of Abbey of St. Urban in Wettingen. The abbey church was dedicated in 1281. Bollinger Sandstein was used for the construction of the abbey by dedicated quarries.
During the first Battle of Villmergen in 1656 and again during the occupation of the region by the French Revolutionary Army in 1799, the nuns were obliged to flee. On both occasions the abbey was completely pillaged, with the consequence that there are few treasures left.
The abbey is renowned for its location at the lake side. It overlooks uper Lake Zürich and the church is listed as a building of historical significance. The nuns run a secondary boarding school for girls. The gardens are known for the herbal remedies grown.References:
First record of Kastelholma (or Kastelholm) castle is from the year 1388 in the contract of Queen Margaret I of Denmark, where a large portion of the inheritance of Bo Jonsson Grip was given to the queen. The heyday of the castle was in the 15th and 16th centuries when it was administrated by Danish and Swedish kings and stewards of the realms. Kastelhoma was expanded and enhanced several times.
In the end of 16th century castle was owned by the previous queen Catherine Jagellon (Stenbock), an enemy of the King of Sweden Eric XIV. King Eric conquered Kastelholma in 1599 and all defending officers were taken to Turku and executed. The castle was damaged under the siege and it took 30 years to renovate it.
In 1634 Åland was joined with the County of Åbo and Björneborg and Kastelholma lost its administrative status.