The Église Saint-Polycarpe (Church of St. Polycarp) is the oldest church of the Oratory of Saint Philip Neri. The church, built by the Oratorians installed on the slopes, was completed in 1670, with the exception of the façade that was built in 1756 by architect Toussaint Loyer who also lengthened the nave.
On 19 June 1791, the Oratory Church became a parish church and took the name of St. Polycarp, as a tribute to Polycarp of Smyrna, master of Saint Pothinus and Irenaeus, who were the first two bishops of Lyon. The church has a famous organ, built by Augustine Zeiger in 1841.
The church has a facade decorated with four Corinthian pilasters topped by a triangular pediment. Louis Janmot made the painting depicting the Last Supper which is placed in the apse.
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.