The church is home to the Madonna Pietatis and the tomb of Count Vratislav of Mitrovice.

Artists such as Jan Jiří Heinsch, Václav Vavřinec Reiner, and Petr Brandl created paintings for the altars.

[2] In 1974 the church was granted the honorary title of minor basilica by Pope Paul VI.

The church is the final resting place for Count Vratislav of Mitrovice, Bohemian Chancellor of Holy Roman Emperor Joseph I, who died in Vienna in 1712, but whose remains were transferred to Prague in 1714 after the completion of the magnificent baroque tomb by Johann Bernhard Fischer von Erlach.

[1][2] The original organ, dating from 1705, is the work of famous Czech organist Abraham Starka of Loket.