This fortified gatehouse served as the official entry to the city ever since its construction in the 14th century, as part of the Grand Rampart which surrounded Verdun in the Middle Ages. The gatehouse was offered to the city by Wautrec, a rich citizen who was an alderman. It symbolised the new status of Verdun which was made an “imperial free city” in 1374. By this the city was obliged to maintain its own ramparts and to look to its own defence in the case of an attack.
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.