St. Mary's Church (Bazylika Mariacka), or formally the Basilica of the Assumption of the Blessed Virgin Mary. Its construction began in 1379. With its volume of 155,000 m³ is a Roman Catholic church in Gdańsk, Poland, and is currently the third largest brick church in the world, and the second largest north of the Alps. Only San Petronio Basilica in Bologna, comprising...