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 Clementinum is a historic complex of buildings in Prague. Until recently the complex hosted the National, University and Technical libraries, the City Library also being located nearby on Mariánské Náměstí. The Technical library and the Municipal library have moved to the Prague National Technical Library at Technická 6 since 2009. It is currently in use as the National Library of the Czech Republic.
Its history dates from the existence of a chapel dedicated to Saint Clement in the 11th century. A Dominican monastery was founded in the medieval period, which was transformed in 1556 to a Jesuit college. In 1622 the Jesuits transferred the library of Charles University to the Klementinum, and the college was merged with the University in 1654. The Jesuits remained until 1773, when the Klementinum was established as an observatory, library, and university by the Empress Maria Theresa of Austria.