The chapel was built on a rectangular plan closed on three sides from the east (similarly to St Margaret’s Chapel on the other side of the ambulatory). Construction work was completed before 1344. Its founder was an important builder of the Gothic Wawel Cathedral, Bishop Jan Grot. The vaulting of Jan Grot’s Chapel is one of the earliest stellar vaultings in Poland. In 1501 its original layout was distorted, as its interior was separated by a wall, as a result of which the sepulchral chapel of King Jan Olbracht was created in the western part.
We are all well aware that to enter this Cathedral can not be without emotion. More I say, you can not enter it without the internal tremor, without fear because it contains in it - as in almost no Cathedral of the world - the enormous size, which speaks to us in all our history, our entire past.cardinal Karol Wojtyla