The parish church of Ják is the most complete Romanesque Church in Hungary. It was founded around 1220 and consecrated in honor of St. George in 1256. It was originally built as the church of a Benedictine monastery.
During the construction phase, the plans may have been changed several times, as shown by various irregularities. It has a troubled history: damaged by fire, storm, and the Ottoman army, it had to be restored several times.
Its most famous feature is the main entrance, which is recessed inward and has several sections, decorated with Norman motifs, and above which Jesus is depicted in the tympanum with angels and apostles. Opposite the main facade of the church, there is a small chapel. This is the Chapel of St. James, which in the Middle Ages was the church of Jac since the monastery church was not allowed to function as a parish church.
The rotunda has been built with 4 apses and 2 floors.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.