Former Roman Catholic Church of St. Mary of Snow (presently the Greek Catholic church of the Mother of God) is one of the oldest Christian churches of Lviv; it was founded by German colonists during the late Middle Ages. The main construction periods are the thirteenth century (erection of a wooden church), the years around 1350 (stone Roman Catholic Church), the seventeenth century (reconstruction), the eighteenth century (fixing up the interior), 1888-1892 (reconstruction by the architect Julian Zachariewicz, when Neo-Roman elements were introduced).