Kungshuset, the "King's House", was built by the Danish king Frederick II between 1578–1584 and originally intended as the residence for the bishop of Lund. After the secession of the Scanian lands to Sweden at the Treaty of Roskilde 1658, and the foundation of Lund University in 1666 to enhance the Swedification of the Danish provinces, the house was incorporated to serve as the university's main building and library. For a time the top of the tower also held an observatory.
An often related local legend has it that king Charles XII of Sweden, who resided in Lund for a time between campaigns in the 1710s, rode up the wide wooden stairs in the tower. The legend is easily debunked, as the tower was added to the building only later in the 18th century.
The house held the University Library in the mid-19th century, but was in a bad shape, with a leaking roof for instance. The professor of Greek language at the time, Carl Georg Brunius, whose prolific work as an amateur architect is seen in many characteristic Lund buildings, took it as upon himself to improve the condition of the building. Today, Kungshuset houses the Department of Philosophy.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.