Breitenbrunn/Erzgebirge, Germany
13th century
Belgershain, Germany
17th century
Neuhausen (Erzgebirge), Germany
c. 1200
Mühltroff, Germany
10th century AD
Triebel, Germany
c. 1200
Euskirchen, Germany
14th century
Euskirchen, Germany
14th century
Weilerswist, Germany
14th century
Zülpich, Germany
14th century
Preußisch Oldendorf, Germany
13th century
Wassenberg, Germany
13th century
Gößweinstein, Germany
c. 1486
Neuwied, Germany
c. 1170
Eitelborn, Germany
11th century
Reichenberg, Germany
14th century
Kaub, Germany
14th century
Obernhof, Germany
13th century
Hunsrück-Mittelrhein, Germany
1332
Boppard, Germany
c. 1200
Bad Kreuznach, Germany
13th century
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.