The building of Hultaby Castle was begun in the second half of the 13th century and it was inhabited in the middle of the 14th century by the Swedish councillor of the realm and earl of the Orkney Islands, Erengisle Sunesson (Bååt).
Together with the castle itself, which is 28 by 32 metres, the castle area consists of a group of 10 building foundations, which lie in an L-formation on the southern and eastern sides of the castle. There used to be an additional fifteen or so buildings spread out outside the castle area. The upper part of the castle, which consisted of a great room, two minor rooms and a tower, and the surrounding buildings, were of timber.
The castle is thought to have been burnt by Count Henrik of Holstein (known as “Järn Henrik”, Iron Henrik), the bailiff of King Albrecht, during the 1360s, at which time there was civil strife between the rival Swedish kings Magnus Eriksson and Albrecht of Mecklenburg.
The area around the old ruins shows many traces of the old cultivated landscape. Apart from the mounds of stones left by the farming of times past, there also remain plants that are favoured by hay making and grazing, such as leopard’s bane, greater yellow-rattle and common milkwort.
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.