The development of Stolberg Castle in its present appearance was essentially proceeded in three phases. In the second half of the 13th century, the original castle (built by the lords of Stalburg in the 12th century) was rebuilt by Wilhelm I of Nesselrode and his son Wilhelm II. After damaged during the Guelders Wars (1502-1543), Hieronymus von Efferen renovated the Stolberg after 1542. A third construction phase was made after 1888 by the manufacturer Moritz Kraus.
Stolberg castle has an late medieval complex on the highest level, with the former guard tower, Palas, two towers, the Renaissance court hall as well as the upper gate, the western tower and the remains of the curtain wall. The second part includes additions of the 19th and 20th centuries, which were built on the second to fourth floors.
Today, Stolberg Castle hosts cultural events and clubs. In the cellar there is a restaurant and a home and crafts museum.
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.