Useldange Castle stands on a small hill in the centre of the village overlooking the River Attert. The ruins present a reasonable picture of the medieval castle, especially the outer wall and one of the round towers. A bridge over the former moat, 10 metres wide, provides access to the castle. The keep, 25 metres tall, stands at the centre of the site.
The castle appears to date from the 12th century when the lordship of Useldange was created. One of the early lords was Théobald d'Useldange. After the dynasty died out in the middle of the 13th century, Jean de Rodemacher became the legitimate proprietor in 1415 by marriage with Irmgard de Boulay. In 1479, Maximilian I confiscated the property and charged Christopher of Baden with its upkeep. As a result of the war between France and Burgundy, the castle and its chapel were seriously damaged. William of Nassau-Vianden, who inherited the castle, sold it to François-Sébastien Bauer of Everlange in 1674. The castle fell increasingly into disrepair and the chapel was desroyed in 1903.
In 1924, American immigrant Mrs Kuhn-Wolff, originally from Useldange, returned to buy the ruined castle. After consolidating the walls in 1934, the family went on to build a modern property over the ruins of the castle's palace. It has now become the town hall. The castle is being restored by the State of Luxembourg.
The castle is open to visitors throughout the year. Special arrangements have been made to allow handicapped and weakly sighted visitors to experience the site.
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.