Schadeck Castle is the most recent and smallest, but still most interesting of the four Neckarstein castles. It is perched on the high mountain like a bird's nest, which is why it is, in fact, called the 'Swallow's Nest'. After Ulrich II (1236-1257) inherited the 'front castle' from his father Ulrich I and another son joined the clergy, Bligger V, the third son, was forced to build a new castle. However, there was no more room on the mountain ridge where the other castles stood and thus he had to erect it downstream from the front castle on the slopes of the rocky massif that drop steeply to the Neckar River. This location must have caused enormous difficulties during the construction. To save the level ground for the castle complex and provide it with a frontal ditch as protection against the mountainside, a large chunk of the steep rock face had to be hewn out.
The castle itself stands on a rocky basement and appears to literally grow out of the mountain. Along the top of the high curtain wall, the most likely place to be attacked, runs a covered wall-walk with little towers on both sides. They command a panoramic view of the Neckar River valley and the impressive walled town of Dilsberg. Visitors to the castle today walk along a path from Neckarsteinach, which leads through the former frontal ditch. Earlier access was by way of a steep serpentine path from the Neckar. Today the ruin is the property of the state of Hesse and was recently restored at great cost. It can be viewed at any time free of charge and the curtain wall can be climbed.
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.