St. Mary's Church (Polish: Bazylika Mariacka, German: Marienkirche) or, properly, Basilica of the Assumption of the Blessed Virgin Mary in Gdańsk is the largest brick church in the world[1], and one of the largest Brick Gothic buildings in Europe. It is 105.5 m long, and the nave is 66 m wide. Inside the church is room for 25,000 people. It is an aisled hall church with a transept. It is a co-cathedral in the Roman Catholic Archdiocese of Gdańsk, along with the main cathedral for the Archdiocese, the Bazylika archikatedralna w Gdańsku-Oliwie. (Basilica-Cathedral of Gdańsk-Oliwa)