Schauensee Castle was first mentioned in the 13th century in connection with the Knight Rudolf von Schauensee (1257-1317) and was probably built in the 13th century. By the beginning of the 14th century it was already in ruins. At the end of the 16th century, Johannes von Mettenwyl acquired the complex and rebuilt it, retaining only the tower from the original castle. In 1750 it was rebuilt to its current appearance under the 'Meyer von Schauensee' family.
The municipality of Kriens was able to acquire the 'Schlössli' in 1963. Today, the castle is used for cultural events and as a reception hall.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.