The Cathedral of St Demetrius (1194-97) is a royal church, built to the order of Grand Prince Vsevolod III. It is cubic in form, with three internal naves and a helmet dome. The cathedral is one-domed and four-pillared. Originally it was surrounded by galleries with towers that connected it to the prince's palace. They were demolished during the restoration in the 19th century.
The church is famous for its white-stone carvings - its walls are decorated with ca. 600 reliefs, depicting saints, mythical and real animals. Most of the reliefs are preserved in their original form, some have been replaced during the restoration of the 19th century. Out of the internal decoration a few fragments of frescoes of the 12th century have survived, particularly fragments of the Last Judgement composition. Currently, the cathedral is a part of the Vladimir-Suzdal open-air 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.