text1: When was St. John's Cathedral constructed?
text2: The most significant buildings are St. John's Cathedral (14th century), the temple is a typical example of the so-called Masovian gothic style, St. Mary's Church (1411), a town house of Burbach family (14th century), Gunpowder Tower (after 1379) and the Royal Castle Curia Maior (1407–1410).