The first convent was built in 1631. The building was burnt during the Swedish Deluge. The present, Baroque structure dates from 1728–1731. When the convent was disbanded, the building housed the local teachers’ training college and later a home for the elderly during the war. These days it features a museum. The building has an irregular shape, in the shape of the letter L, having the longer side from the direction of the Vistula River. The building is a brick structure with a basement under part of it. Its shorter wing joins the Church of the Holy Spirit. Currently the seat of the Rev. Dr. Władysław Łęga Museum in Grudziądz.