Jerzy,
To many people,especially Hindu people,Wawel because of it's chakram is a sacred place.
Hmm, I am not Hindu and it is not sacred to me ha ha ha ha
But I know what you are talking about. I saw "Indiana Jones and the Temple of Doom" in which he must recover stolen chakrams for some Hindu village. They are oval and glow when put together ha ha ha ha ha
If you are a sceptic ,don't bother going there ,you won't feel anything..ha ha
We often go to Wawel Castle when we take a trip to the city centre. Not to feel the chakram, though. Just to look around, see nice architecture, admire views from the top of walls.
I don`t need any chakrams. I get my laughter every day which gives me more healing power than 100 sacred stones.