CIty I'd LOVE to explore is Kraków
Again - sorry to be down on Polish cities, but my daughter (half British, and widely travelled in the UK) studies in Krakow. 4 year ago she was crazy about it. Now, she has realised what Krakow really is - a kitsch, overblown, ridiculously expensive polluted rotting city full of highways.
It is also full of Americans ( "Oh Harry, isn't it just gorgeous!") and the UK drunk brigade.
Whenever I am down I cheer myself up by thinking that at least I don't live in Krakow. It is nothing special at all, unless you are from Krakow, and full of it. And Krakow people vote PIS. That surely tells us all we need to know.
The really beautiful Polish cities were built by the Teutonic Knights along the Vistula, or by their Kraut brothers (eg: Wroclaw)
Krakow is plastic, and not a touch on at least 5 UK cities I could mention in terms of architecture or geography. So I will.
Here to help as always:)
"Day trips" are key
Excellent. But I have day-tripped Krakow for 30 years, and it doesn't meet the hype.. Wroclaw beats it hands down IMO, as do many Polish cities. It's the same with the Czech Republic. There are 4 or 5 towns that are on a par with Prague, without the crowds.