Charenza, also Karentia or Karenz, was a medieval Slavic burgwall on the island of Rügen in the Baltic Sea. It was the administrative centre of the Rani tribe and of the Principality of Rugia. Today, the remnants are called Venzer Burgwall. Charenza was not only the administrative hub of the Rani tribe, but also a religious centre with the temples of Rugievit, Porevit and Porenut. The main religious centre of the Rani, however, was Arkona on Wittow.
In 1168, King Valdemar I of Denmark and his archbishop Absalon captured Arkona. Charenza surrendered a few days later after negotiations with the Rugian princes Tetzlav and Jaromar I. The temples were destroyed, the princes agreed to become Danish vassals and the population adopted the Christian faith. In 1180, the administrative centre of the Principality of Rugia was moved to Rugard (today Bergen auf Rügen, just a few kilometres to the southeast).
In the 12th century, Charenza was mentioned by Saxo Grammaticus and Helmold von Bosau. The last records are from the early 13th century. When the Danish king raised money to build 12 churches on Rügen, one of them was the capelle nostre in Charenz, which in 1232 was granted the village of Gagern as a fief. In 1234, when the Rugian prince Vitslav I granted Lübeck law to Stralsund, the document was signed in Charenza. The last record mentioning Charenza was in 1237. In the 14th century, 'Gharense' was mentioned as belonging to the parish of Gingst.
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.