Brønshøj Church was built in the 1180s by Bishop Absalon, who is regarded as the founder of Copenhagen. This makes the Church the oldest intact building in Copenhagen. Originally dedicated to Saint Lawrence, Brønshøj Church is first mentioned in two papal briefs of 21 October 1186 and 25 March 1193. Limestone from Stevns Klint was used to build the Romanesque-style nave and choir. The red-brick Gothic tower was added in the 1400s. The porch was added in 1892, while the north-facing vestry was not added until 1942.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.