Kostianvirta battle was part of the Great Northern War (1700-1721). Russian army invaded to Finland in 1713 because the major Swedish army was fighting in central Europe. On October 1713, Finnish army under General Carl Gustaf Armfeldt had set the defence line to Kostianvirta river. When Russians attacked, Armfedlt’s 3,400 men first succesfully prevented 15,000 Russians to cross Kostianvirta.
On October 6, Russians made the landing coincidentally in Kostianvirta and near Mallasvesi and tried to besiege Finnish Army. Finnish soldiers were forced to withdrawn to the north. They lost 800 men and all nine cannons.
The monument of battle was erected in 1906. There are also reconstructed wooden trenches and remains of original defense structures.
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.