Along with the neighbouring college, the church comprises a complex funded by Jan Działyński, who brought the Jesuits to Grudziądz in 1622. The church was built in the Baroque style in 1648–1723. The façade of the church faces the Astronomy Square. Its upper part features three niches with statues of the saints Ignatius Loyola, Stanislaw Kostka and Andrzej Bobola. The interior decoration is in the Regency style, in the Sino-Japanese manner, which can be seen in particular on the columns in the main altar, the pulpit or the choir palate. The placement of oriental motifs in the church is not coincidental, as the church’s patron saint, St Francis Xavier, was a missionary to the Far East. A Baroque painting of the patron saint from the second half of the 17th century is located in the centre of the altar, adorned by sculptures of figures of various races.