The Oppidum d'Ensérune is an ancient hill-town (or oppidum) near the village of Nissan-lez-Ensérune. The settlement was occupied without interruption between the 6th century BC and 1st century AD, its location being chosen presumably because it was a hill with good views over the coastal plain, being close to the Roman road Via Domitia, the Montady lake, and fertile agricultural land below.
There is a museum on the site which offers a display of some of the finds on the site, as well as giving more information about the fort and the field system.
Below the Oppidum was the swamp of Montady, which is now wedge shaped fields separated by irrigation ditches that converge in the centre. In the 13th century, the swamp was drained; the ditches allowed water to flow to the centre of the circular depression, from which it was conveyed through underground pipes several kilometres to the south. The drainage is still functional and remains in use.
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.