The Gothic cathedral is Warsaws oldest and most important church. Since 1798 it fulfils the role as a cathdral. In 1817 Katedra Swietego Jana Chrzciciela became the cathdral of the archbishopric Warsaw.
The crypt accommodates the graves of many Polish personalities. During the second world war, the cathdral was completely destroyed, but rebuilt right after the war.
One of the most interesting attractions are the reconstructed old sculptures, and the glass windows with pictures of Polish saints.
To remember the reconstruction after the war, a chain of a German tank was attached into a wall.