I saw that in Poland too.
Well I've seen it in Ireland too as it happens! It was just a singular, random example. The countryside in Provence is full of lavender. The sheer regional variety in French landcape is amazing - it really is like lots of little countries within one sometimes.
Paris seems to be dull and overhyped.
Overhyped, probably - but only because of the enormous name & reputation it has to live up to. Doomed to falling short in some ways really.
But dull, no way - and grey buildings??
I don't know where you get that from. To be honest, and no offence, but when anyone says grey buildings, after Russia, Poland would be the first place that most people would think of!
I have been to France a number of times (including Paris) and really it is delusion and fantasy to think that Poland can compare or even come close. Poland is not without charm and beauty but I think you would be very lucky to find any non-Poles who think it is a more beautiful country than France. It's even a bit sad and laughable to hear the suggestion really.
Maybe it's because saying I was in Norway doesn't sound as good as saying I spend my holydays in France?
More likely because Norway is more expensive.