Seckau Abbey was endowed in 1140 by Augustinian canons. An already existing community in Sankt Marein bei Knittelfeld was moved to Seckau in 1142. At the request of Archbishop Konrad I of Salzburg, Pope Innocent II instituted the founding of the congregation and the transfer to Seckau on 12 March 1143. The abbey church, a Romanesque basilica, was built from 1143 to 1164.
According to an old custom, the canons founded a double monastery. The women's chorus likely came to the abbey no later than 1150 from Salzburg, mentioned in a deed of the Noble Burchard of Mureck in 1150.
This establishment was dissolved in 1782. In 1883 the monastery was resettled by Benedictines from Beuron Archabbey, who had had to leave Germany because of the Kulturkampf. In 1940 the monks were evicted by the Gestapo and the buildings were confiscated. In 1945 the monks were able to return.
The abbey maintains a secondary school (Gymnasium) and carries out the duties of the pastoral care belonging to a parish.
The abbey church, a Romanesque basilica, was built between 1143 and 1164. For centuries it was the place of burial of the Inner Austrian line of the Habsburgs.
References:The Broch of Clickimin is a large and well preserved, though somewhat restored broch near Lerwick. Originally built on an island in Clickimin Loch (now increased in size by silting and drainage), it was approached by a stone causeway. The water-level in the loch was reduced in 1874, leaving the broch high and dry. The broch is situated within a walled enclosure and, unusually for brochs, features a large 'blockhouse' between the opening in the enclosure and the broch itself. Another unusual feature is a stone slab featuring sculptured footprints, located in the causeway which approached the site. Situated across the loch is the Clickimin Leisure Centre.