The construction of the Church, designed by Giovanni de Rossi, was led by Giuseppe Brizio and then modified by Giovanni Maria Bernardoni. The final touch was given to the church by Giovanni Trevano, the designer of the façade, dome and interior decoration, modelled on early-Baroque Jesuit churches in Rome. It has had a very turbulent history. After the dissolution of the Jesuit order in 1773, the Commission of National Education handed the Church over to the University of Krakow and the Cistercian fathers from Mogiła in 1786. From 1809 to 1815, it functioned as an Orthodox church, and in 1830 it returned to the Roman Catholic parish. From 1899 to 1916, the dome with a lantern, facade, roofs, interiors and stairs were renovated by Zygmunt Hendel. The church was built on a Latin cross plan. The Church is wide, single-nave with side chapels, a transept with a massive cupola, and a short presbytery closed with a semi-circular apse. In the niches of the two-storey dolomite façade stand statues of Jesuit saints by David Heel; above the portal is the emblem of the Jesuits and the coat of arms of the founder, King Zygmunt III Vasa. The rich interior decoration depicts the missionary activity of the Jesuits. The late baroque main altar, designed by Kacper Bażanka in 1735, features sculptures by Antoni Frączkiewicz and a painting by Józef Brodowski from 1820. The tombstone of Bishop Andrzej Trzebicki from the 17th century, the All Saints painting by Szymon Czechowicz from 1763, the early baroque pulpit, the statue of Piotr Skarga from 1869 by Oskar Sosnowski, the baptismal font from 1528, the painting of St. Stanislaus Kostka from the beginning of the 17th century, the monument of the Bartsch family from 1827 and the epitaph of the Branickis designed by Kacper Bażanka in 1727 also attract attention. Since 2010, a National Pantheon has been created in the church crypt. It is a new resting place for outstanding Polish creators of culture, science and art, a place of national pride and remembrance independent of the Church, and fulfils a museum and educational function. Among those buried here are the writer Sławomir Mrożek and Father Piotr Skarga, a theologian, preacher and writer. On plinths in the square fence in front of the Church, there are sculptures of the 12 apostles designed by Kacper Bażanka, and a work by David Heel from 1722. Today, they are copies of destroyed originals made of Pińczów limestone. In the Church hangs the longest Foucault pendulum in Poland (46.5 metres), whose operation, demonstrated on Thursdays, is one of the proofs of the rotational movement of the Earth around its own axis.