St Stephen of the Abyssinians is a Roman Catholic church located in Vatican City. The church dedicated to Stephen the Protomartyr is the national church of Ethiopia. The liturgy is celebrated according to the Alexandrian rite of the Ethiopian Catholic Church. It is one of the only standing structures in the Vatican to survive the destruction of old St. Peter's basilica, and thus it is the oldest surviving church in Vatican City.
The church was, by tradition, built by Pope Leo I (ca. 400-461). It was rebuilt in 1159 under Pope Alexander III, who also built a monastery for Ethiopian monks next to it.
In 1479, Pope Sixtus IV restored the church and assigned it to the Coptic monks in the city. It was at this time that the name was changed to reflect that it was served by Ethiopians (Abyssinian). It was altered under Pope Gregory XI (1700-1721), and again in 1928.
The façade is in the style of the early 18th century. The 12th century doorway, decorated with the Lamb and the Cross, has been preserved. The church has a single nave with ancient columns along the sides. The most important work of art is a fresco of the Madonna with Child in the Roman style from the 15th century.
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.