The church is dedicated to St Francis Xavier and is one of the rectorates within the Roman Catholic parish of St Nicholas, and is recognised by its two pointed towers. Since 1654 it has been a Jesuit church and services there are in a variety of styles.
Next to the church is Ignatius House (Dutch, "Ignatiushuis"). It is a spirituality and cultural centre also of the Society of Jesus. It was founded in 1985 as a non-residential spirituality centre and to its present location in 2000. It is dedicated to Ignatius of Loyola the founder of the Jesuits. It primarily runs courses and retreats on Ignatian spirituality for Dutch speakers. Although, it has Jesuits on the staff, it is run by a team of lay people, members of other Catholic religious orders and other Christian denominations. The building consists of three large rooms, the Great Hall that can fit 50 people in theatre-style seating, an upper room for meetings, lectures, courses and workshops and a meditation room for reflective activities.