Notre-Dame-de-la-Nativité is the main church in Saverne. It was first built in the 12th century as a parish church before being re-consecrated to saint Bartholomew in the late 13th century. It was converted into a collegiate church of Augustinian Canons Regular in the 14th and 15th century and held that status by 1485 at the latest. It is now the town's parish church and has been listed a historic monument since 1977.
The oldest items of church furniture are the 1495 pulpit (with stone marks by Hans Hammer, master mason at Strasbourg Cathedral) and a carved wooden sculpture of the Virgin and Child from the same era, probably by Nikolaus Hagenauer. The choir has a 16th-century crucifix, a 15th-century pieta and part of a limewood sculpture of the Assumption, probably from a 1486 altarpiece. The windows in the main nave were almost completely destroyed by a bombing raid on the night of 30–31 July 1918.
The bell tower is the part of the church that displays the most Romanesque style, with its archery banners and its checkered frieze that is typical of Romanesque buildings in the region, such as Marmoutier, Reutenbourg or Schweheim. The original tower had only four levels that were surmounted by a simple roof with two inclined slopes. The roof was raised at the end of the 14th century.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.