Gytheio was the seaport of Ancient Sparta. It is the site of ancient Cranae, a tiny island where, according to the myth, Paris and Helen spent their first night together before departing for Troy.
In Roman times Gythium remained a major port and it prospered as a member of the Union. As purple dye was popular in Rome, Gythium exported that as well as porphyry and rose antique marble. Evidence of the ancient Gythium prosperity can be found by the fact that the Romans built an ancient theatre which is well preserved today and is still used occasionally. The ancient theatre and the city's Acropolis (west of the theatre) were discovered by the archeologist Dimitris Skias in 1891. Some time in the 4th century AD, the city was destroyed. What happened to Gythium is not recorded but it is thought to have been either sacked by Alaric and the Visigoths, pillaged by the Slavs or destroyed by the massive earthquake that struck the area in 375 AD.
After the earthquake Gythium was abandoned. It remained a small village throughout the Byzantine and Ottoman times. Its importance grew when Tzannetos Grigorakis built his tower at Cranae and more people came and settled at Gytheio. During the Greek War of Independence, refugees flooded into Mani and made Gytheio a major town.
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.