Lövstad Castle has its origins from the 15th century, but the present building was erected by Axel Lillie in the 17th century. It came to the von Fersen Family through Hedvig Catharina De la Gardie (who was the heir of her mother Hedvig Catharina Lillie) and to the Piper Family through Sophie Piper, who was sister to count Axel von Fersen.
The interior is intact since 1926, when the last owner died. Lövstad is today a museum open to the public with guided tours. There is a café and a restaurant at the castle.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.