Introduction to St. Mary's Church: St. Mary's Church is a brick Gothic church, 80 meters high, built in the 14th century. Because of its asymmetrical appearance, it plays an important role in the market square of the old city. Every hour, a horn will sound from the top of the clock tower, which will be broadcast live in Poland and abroad by Polish National Radio 1. The plaintive tune is interrupted midway to honor the famous trumpeter of the 13th century.