The Basilica of St. Severin is one of the twelve Romanesque churches of Cologne. St. Severin was established in the late 4th century as a memorial chapel and extended several times. The oldest parts of today's building date back to the 10th century.
The church has been extended and enlarged several times. On the passable archaeological dig area under the church in the midst of a Roman graveyard the foundation remains of the original building can be viewed.
St. Severin still owns rich furnishing: the murals in the crypta, the choral equipment with a part of the medieval floor, the original choir seating and the high altar, behind which the Shrine to the Holy Severin is shown, so that the believers could walk under it.
The forked crucifix from the 14th century and the late Gothic glass paintings in the long nave are also remarkable. The external impression is primarily Gothic as only the choir chancel remained Romanesque.
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.