Strong and weak points of heritage buildings in Poland

Currently I am working on promoting the small palace in the centre of Poland.
Would love to introduce it to the rest of Europe as well, it's a lovely place but having a chance to visit some of the museums or culture centres in London,, like Somerset House or V&A I am aware there is a LOT to be done about that.

Do you happen to visit any heritage buildings in Poland while visiting or living in here ?

What's your first imrpession ..? Any strong or weak points of these places, what would make you come back again. I would appreciate any suggestions, many thanks,

I've been to several heritage sites in Poland. What is critical to guest services is the quality of the guide services. Too often it feels like a forced march. Also what causes one to return is a new feature, or other events at the site such as a concert or art exhibit. Good luck.

Thanks a lot.