The main sight in Őriszentpéter is the Romanesque memorial church, built around 1230, then expanded in the 14th-15th century in Gothic style and converted into a fortress about 1550. The western portal is worthy of attention. The mediaeval church was decorated with frescoes, not only inside, but also outside. Most of them have been destroyed, just a few fragments have survived on the south outer wall. In the 17th century, quotations from the Bible were painted on the wall in the nave and the sanctuary, and these can still be seen today. The interior furnishings were produced to designs by church artist János Klonfár. A picture of St. Peter (Márton Michl,1801) is hung in the sanctuary. The church was last renovated in 2001.
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.