Complex sentence: The altar of Veit Stoss (Polish: Ołtarz Wita Stwosza), also "Mary's altar" ("Ołtarz Mariacki"), is the largest Gothic altarpiece in Europe, and is behind the main altar of St. Mary's Church, Kraków, Poland.
Split into simpler sentences: The altar of Veit Stoss (Polish: Ołtarz Wita Stwosza), also "Mary's altar" ("Ołtarz Mariacki"), is the largest Gothic altarpiece in Europe. It is located behind the main altar of St. Mary's Church, Kraków, Poland.