The history of the Suure-Lähtru estate dates back to the end of the 16th century. During the centuries, it has belonged to several different aristocratic families. During much of the 20th century, the manor was used as a school house. The current building was completed in 1778, and was designed by Johann Andreas Jaenichen, while most of the stucco work was done by Johann Caspar Mohr, who was province architect of Estonia and who also designed the Stenbock house (the current seat of the Government of Estonia) in Tallinn. A fine rococo stair is still preserved in the house.
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.