The Vigna Cassia catacombs located next to thel Parco Archeologico Neapolis, owe their name to the family that owned the vineyard (at the time of discovery), which was located above the catacombs themselves.
They were found in 1852 during excavations by the Commission of Antiquities and Fine Arts, which at the discovery of steps carved into the rock that led to about 15 meters below street level, decided to deepen the research. After the excavations they discovered that the steps continued to a depth of 25 metres and that they led to the beginning of a series of tunnels.
The Catacombs of Vigna Cassia are considered the largest in Sicily, the beginning of their construction dates back to the third century AD, were active from the second half of the fourth century AD and presented themselves as a real cemetery consisting of a ipogeo of communities, but also five private hypogeums (intended for individual burials).
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.