The ruins of the Revište Castle near Hliník nad Hronom stand on top of steep rock about 100 m above the floodplain of the river Hron. There is a wonderful meadow below the castle used by canoeist as a camping site.
The castle was built in the 13th century as part of protection to central Slovakian mining towns and the trade route running along the Hron. Renaissance fortifications were added to the older Gothic part of the Castle. Mercenaries of the rebellious magnate Imrich Thököly conquered the castle and converted it in ruins in 1678. Only some Castle walls survive.
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.