Avanduse manor (Awandus) was first mentioned in 1494. The origins of the present-day building was a building that was erected in 1679-1684 by Tallinn master builder Gerd Vorberg at the initiative of the landowner at the time, Gideon von Fock. The building has however been heavily rebuilt since, with final changes being made by architect Rudolf von Engelhardt in 1890. Russian geographer Fyodor Litke is the most famous owner of the estate, and a plaque dedicated to his memory hangs from a wall of the manor.
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.