Vanse Church is probably one of the oldest churches in Norway; it originates most likely from 1037. In 1848 it was extended to become a cross church, and visiting church musicians often refer to it as a cathedral. The church was struck by fire in 1872, but was completely restored in 1875. The altarpiece was painted in 1866 by G. H. Lammers. The church is built of stone with chalk plaster, and with its 1100 seats, it is the largest in the municipality.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.