This baroque monastery church with its monumental Dutch-style facade was completed for the Carmelite Order in 1702. The church’s interior is one of the richest in Prague, not only architectonically, but also because of its furnishings, paintings, sculptures, and other works of art. Masses here are also conducted in French.
Source: https://www.prague.eu/en/object/places/1668/church-of-st-joseph-in-the-lesser-town-kostel-sv-josefa-na-male-strane