The Church of the Ascension is an Episcopal church built in 1840–41. It was the first church to be built on Fifth Avenue and was designed by Richard Upjohn in the Gothic Revival style. The interior was remodeled by Stanford White in 1885–88.
The brownstone church is symmetrical, and features a square tower. Stanford White's interior design features a pulpit designed by Charles Follen McKim, mosaics by D. Maitland Armstrong, a marble reredos by Louis Saint-Gaudens and several stained glass windows by John LaFarge and his altar mural The Ascension. This is considered to be one of his best works
The parish house designed by McKim, Mead and White took a previously existing building and turned it into a Northern Renaissance-inspired building of yellow brick with bottle-glass windows.
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.