Castillo de Guardias Viejas is a battery built in 1769, near the rocky surface low rise of the Mediterranean Sea. Owned by the Regional Government of Andalusia, the municipality has carried out renovation work in the building, which houses a permanent exhibition of clothes and weapons of the Napoleonic era.
It was restored in 1980. The castle is one of five forts in the town, next to the Moorish Tower Hill, the Square Tower, Tower of the Netherlands and the Tower of Balerma. It has been a venue for musical events such as the Natural Music Festival and the festival Creamfields Andalucía.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.