The oldest recorded mention of the place (Feyena) has been dated to 1325. At this time, there was a fortified manor or a castle at the site, the remains of which were reconstructed and expanded in a romantic fashion during the 19th century but are still visible in the manor park.
The present manor house was commissioned by the Baltic German von Stackelberg family and built 1784-1797. It was designed by an anonymous Italian architect in latebaroque style. The wings of the long main house have circular pavilions with preserved decorated vaulted roofs, where formerly the family displayed their art collection, which reputedly held works by Hans Holbein, Nicolas Poussin, Claude Lorrain and Antoine Watteau . The main building also showcases some preserved architectural details, notably two painted ceilings as well as further, albeit later, architectural details.
The most famous resident of the manor house was the archaeologist Otto Magnus von Stackelberg who grew up there. Nowadays the manor houses an elementary school (est. 1855), a public library and a public Internet point of access.
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.