The original foundations of the Kleinbüllesheim Castle date back to circa 900 AD and were discovered in 1942 south of the present castle, during excavation work in the Second World War. The present castle was built with a protective moat. The two-storey brick building with rounded corners and attic-roof appears to visitors as a massive edifice. This impression is reinforced by the huge entrance gate, dating back to the 16th century, and by the square ground plan. The corner towers and the outside walls of the original fore-castle have been preserved from the 14th century. The moat has dried out and is only partly recognizable. The castle is privately owned and used for farming.
In 1042 one of the last Earls of Tomburg signed Kleinbüllesheim over to the cathedral chapter of Cologne. In 1728 Johann Conrad Schlaun built the manor house next to the late-gothic fore-castle, in place of the medieval moated castle for the elected Chamberlain of Cologne, Adam von Bourscheidt. Over the years there were continual changes of owner, the castle was passed from one aristocratic family to the next, but then it belonged to Earl Wolff von Metternich zur Gracht, who was registered as owner in 1850. Earl Paul Wolff von Metternich has been renovating the castle for years.
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.