The first written record of the Blankenfelde manor dates from 1689 when the owner was Ernst von Medem. The estate changed owners several times and was part of the von Hahnide family from 1840 until 1920. Between 1804 and 1805 the manor belonged to the Russian imperial house of Andreas von Königfelsile. Louis XVIII, King of France, lived in Blankenfelde manor for a while when he was in exile.
The complex structure of the manor dates from the mid 18th century, and the main building erected in 1743 has a 19th-century English-style park. There are currently ideas for the exploration of the estate in the concept of private ownership and tourism. The renovation work of the main building is now underway. Blankenfelde estate flower garden is part of the spring tulbifestivale.
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.