Nederluleå church is the largest medieval church in Norrland. It was built during the 15th century and inaugurated by Archbishop Jacob Ulfsson in 1492. The church has a very rich interior and furnishings. The late-mediaeval frescos in the chancel were by the school of Albertus Pictor.
The richly decorated triptych was made in Antwerpen around 1520 and it is one of the finest in Sweden. The font and cruficix date also from the late Middle Ages. The wooden pulpit was carved by Nils Fluur in 1712.
References:Sigmaringen Castle was first mentioned in the year 1077 in the chronicles of Petershausen monastery. The oldest parts of the castle are concealed beneath the alterations made during the 17th and the 19th centuries. The secret of the earliest settlement built on this defendable rock will never be fully revealed: large-scale excavation work would be necessary, which the extensive land development renders impossible. Judging from the many Roman remains unearthed in the area around Sigmaringen, the 12th century keep known as the 'Roman Tower' could be traced back to a Roman predecessor.
The castle remains that have been preserved (gate, great hall and keep) date back to the Staufer period around 1200. The castle remains were integrated into subsequent buildings. The foundations of the castle buildings are to a large extent identical to the surrounding castle wall.
These remains give us a good idea of how the castle might have looked during the 12th century.