There were originally several churches in the Nizhny Novgorod Kremlin, but today only Michael the Archangel Cathedral exists. It was built in the middle of the 16th century and rebuilt in 1628-1631. The cathedral is the tomb of Kuzma Minin. In 1828, in front of the Archangel Cathedral was constructed the obelisk in honor of Kuzma Minin and Dmitry Pozharsky (by architects Melnikov and Martos).
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.