Travel / Preparing a TV show. Need advice on places in Poland where you can make a wish! [5]

Czesc dear friends! My name is Mikle! I'm a tv producer from Russia and i'm preparing a tv show called "Wonders" about places in the world, where people make a wish. This summer we are shooting in Poland, Ukraine and Belorussia. I would be most grateful if you share your knowledge of such places in Poland. Anything interesting that suits the topic. Looking forward for cooperation!