After Tartar raids in the 13th century left the original church in a heap of ruins, St. Mary's was rebuilt in Gothic style on the existing foundations and consecrated in 1320. In the early 15th century the towers took the iconic form they have today, when the northern tower was raised to 80m high and made into a watchtower for the city. It is from here that the hejnał mariacki - the city's famous bugle call - is played every hour on the hour. One of the city's most enduring traditions, the tune ironically breaks off mid-melody in honour of the mythical trumpeter who was shot in the neck while belatedly warning the city of Mongol invaders.The noon-time hejnał is heard across Poland and abroad broadcast live by the Polish national Radio 1 Station.