Built beside the small Byzantine church of St. Symeon, the church of St. George was a Orthodox Cathedral. An elegant mix of Gothic and Byzantine styles it was intended to rival its Catholic counterpart. However it was too big, with insufficient buttressing and a roof that was going to be too heavy. The pillars throughout the nave were expanded to take more weight and the roof was inserted with large upturned terracotta pots to spread the load. The church was not in existence long enough to find out if the builders may have eventually got things right. Taking the brunt of the Ottoman bombardment in 1571, evidence of which is still very evident in the remaining walls, the building stood for a little over a hundred years.
There are 15th century fresco fragments clearly visible in the three apses, though these are fading fast and there is no move to preserve them.
St. Symeon is accessible from St. George, it is a church with twin apses and is most notable for being the last resting place in Cyprus of St. Epiphanios one time Bishop of Salamis.
There are two other small churches nearby in what was once the Orthodox quarter of the city, Ayia Zoni, 14th C Byzantine, the church is intact and contains frescoes but is closed to the public. Close to it is another church of the same period, St. Nicholas (not to be confused with the catholic cathedral), a double-aisled church with two semi-circular apses and dome, otherwise a ruin.
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.