Church of the Holy Sacrament, Warsaw

St. Kazimierz Church Warszawski Kościół Sakramentek pod wezwaniem Św. Kazimierza (Polish)
St. Kazimierz Church, reconstructed after World War II.
General information
Architectural style	Baroque
Town or city	Warsaw
Country	Poland
Construction started	1688
Completed	1692
Demolished	1944
Design and construction
Architect	Tylman Gamerski

St. Kazimierz Church (Polish: in full, Warszawski kościół Sakramentek pod wezwaniem św. Kazimierza) is a Roman Catholic church in Warsaw's New Town at Rynek Nowego Miasta 2 (New Town Market Place, no. 2).

St. Casimir Church was originally the Kotowski Palace, residence of the Wyszogród stolnik, Adam Kotowski. In 1688 it was purchased by Queen Maria Kazimiera Sobieska to be transformed into a church to serve the Benedictine Sisters of Perpetual Adoration of the Most Holy Sacrament, whom she had brought to Poland.

In 1688-92 the Kotowski residence was transformed into a church-cum-cloister, to a design by the leading Polish-Dutch architect Tylman Gamerski. As with many of the buildings that were reconstructed after the Deluge, Tylman designed the church in Palladian style.

Between 1718 and 1721 the trompe-l'œil altars of St. Casimir and Virgin Mary were sponsored by Michał Kazimierz Radziwiłł, voivode of Vilnius. In 1718 the church furnishing was completed with a profuse late baroque pulpit in the shape of a flower and between 1745 and 1748 with a rococo organ. The significant additions in the second half of the 18th century were tombstones of the members of the Sobieski family - Maria Karolina Sobieska de Bouillon (the granddaughter of John III of Poland) and Maria Józefa Sobieska. In 1769, the former 17th century tabernacle was replaced with a new marble one decorated with silver. During the Kościuszko Uprising the nuns donated some of the church equipment to the army - 12 silver candlesticks from Augsburg, 5 gilded reliquaries, 52 precious votives and 4 statues of angels from the main altar - 412 silver grzywnas worth.