Alberweiler Castle is a small castle-like structure where the ground and the first floor of the castle are made of stone and the upper storeys consist of three projecting half-timbered floors.
A castle is first mentioned in sources dating from the 11th century. It was occupied by knights in the service of the Counts of Berg-Wartstein. This early structure was destroyed in 1487 but soon after, towards the end of the 15th century, a new castle was erected at the behest of Bartholome of Warthausen. Some remains of the circular rampart are still visible. Following the extinction of the house of Warthausen zu Alberweiler in 1585, the castle was enfeoffed to the Counts of Stadion by Emperor Rudolf II. The castle was renovated in early-Baroque style in the 17th century. The gate was also constructed during these restoration works. At around 1700, the castle functioned as residence for the local reeve, the Counts of Stadion residing at Warthausen Castle, and subsequently went into private ownership during the course of the 18th century. In 1826, the Counts of Stadion sold all rights to the village and the castle to the Kingdom of Württemberg. Following alterations in 1880 the structure slowly began to fall into disrepair. The castle was extensively restored in the late 20th century and is privately owned today.
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.