Ursuline Church of the Holy Trinity was built between 1718 and 1726 in the Baroque style. The church was designed by Carlo Martinuzzi, a Friulian architect, and is noted for its extensive altar made of African marble designed by Francesco Robba, who also built the Fountain of the Three Rivers of Carniola which stands on Town Square in Ljubljana. The original bell tower was destroyed in the Ljubljana earthquake of 1895. The current one was built in the 1900s. The staircase in front of the entrance has been partially designed by the architect Jože Plečnik in 1930.
In front of the Ursuline Church stands the Holy Trinity Column. The originally wooden column stood since 1693 in front of a Carmelite monastery at Ajdovščina. In 1722, it was replaced with a stone one, made by Luka Mislej, whereas the marble statues have been presumably created by Francesco Robba. In 1834, the stonemason Ignacij Toman made a new pedestal and the original Robba's sculpture was replaced with a replica. The original is now kept by the City Museum of Ljubljana. The column was again renovated after the 1895 Ljubljana earthquake by the stonemason Feliks Toman. It was relocated in front of the Ursuline Church in 1927 upon plans by Plečnik as part of his redesign of Congress Square. Now it forms an axis with the Ursuline Church, the lights at the square and the building of the Slovenian Philharmonics.
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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.