Kernavė was a medieval capital of the Grand Duchy of Lithuania and today is a tourist attraction and an archeological site. In 2004 Kernavė Archaeological Site was included into UNESCO world heritage list. The area of Kernavė was sparingly inhabited at the end of the Paleolithic era, with the number of settlements significantly increasing in the Mesolithic and Neolithic eras. It is believed, that first inhabitants settled in Kernavė territory in 9-8 millennium BC, but only in the first centuries AD they started to form bigger settlements in the Pajauta valley (Kernavė territory). Settlements were protected by five fortified mounds, which still remain.
The town was first mentioned in 1279, when, as the capital of the Grand Duke Traidenis, it was besieged by the Teutonic Knights. In 1390, during the Lithuanian Civil War (1389–1392), the knights burned the town and its buildings in the Pajauta valley, including the castle. After this raid, the town wasn't rebuilt, and the remaining residents moved to the top of the hill instead of staying in the valley.
In later years, the remains of city were covered with an alluvial earth layer, that formed wet peat. It preserved most of the relics intact, and it is a treasure trove for archaeologists, leading some to call Kernavė the 'Troy of Lithuania'. For example, Kernavė has the oldest known medgrinda, a secret underwater road paved with wood. The road was used for defense and dates from the 4–7th centuries.
The site became the subject of wider interest again in the middle of 19th century, when a romantic writer, Feliks Bernatowicz, depicted the area in his novel Pojata, córka Lizdejki in 1826. The hillforts were soon excavated by the Tyszkiewicz brothers and then by Władysław Syrokomla (1859). After World War II, the excavation works were restarted by Vilnius University in 1979, and then again by the Lithuanian Institute of History between 1980–1983.
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.