Plaošnik is an archaeological site and holy place in Ohrid. The church was built by St. Clement in the year 893 on the foundation of an early Christian basilica, and dedicated to St. Panteleimon. It was here that the Ohrid Literary School, a center of Slavonic literary and cultural activity where more than 3,500 disciples were educated. St. Clement was buried in this church, in the tomb which was built by his own hands.
After the advent of the Ottoman Empire, St. Clement's church was converted into a mosque, known as the Imaret Mosque, of which only a small enclosure remains. The mosque was built as an endowment and a memorial by Sinan Chelebi, member of the distinguished Turkish family of the Ohrizade. The Imaret Mosque was torn down in 2000 with the reason given that it was constructed over the remains of a church in the Plaošnik area and the former mosque was added to the damaged religious buildings list compiled by the Islamic Religious Community of Macedonia.
Apart from the church's many reconstructions during the time of the Ottoman Empire, it has undergone extensive reconstruction and excavation in the contemporary period.
On Plaošnik has been discovered the baptistery of the five aisle basilica with hooked crosses (swastikas) on the mosaic floors which date from the period between 4th and 6th century. It is assumed that this early Christian basilica at Plaoshnik upon which the Kliment's monastery was built in the 9th century, was dedicated to St. Paul the Apostle who preached Christianity in Lychnidos (present-day Ohrid) in the 1st century A.D.
On 10 October 2007, a deposit of approximately 2,383 Venetian coins was discovered by archaeologists while excavating the monastery.
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.