In the Church of Saints Peter and Paul the relics of St. John of Polivotsky were transferred to the church by Tsar Kaloyan in the capital city of Turnovo in 1204. Subsequently, a monastery complex was formed around the church. It was built according to the will and priesthood of Anna-Maria (1221–1237), wife of Tsar Ivan Assen II. During the Ottoman rule, hundreds of manuscripts from the royal library were placed there. Many of them were destroyed in 1842 by the Greek ruler.
The church is dedicated to the Christian Apostles Saint Peter and Saint Paul. It follows the cross-domed design and has a single apse. The cella is divided into three naves by two rows of columns. The columns' capitals are decorated with plastic carving and tracery. The church has a high, massive iconostasis. According to the 14th-century account of Patriarch Evtimiy, the church and the surrounding monastery were built on the order of Tsar Ivan Asen II's (ruled 1218–1241) wife Anna.
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.