I learned on arrival that the city was not in fact color-graded and filled with beautiful slow motion video opportunities. Since then, every time I mention to any Pole that I've been to Bydgoszcz, the question is always "Why?"
All my memories of two fairly long trips around Poland are now ten years out of date, and I've heard only good things about its development since then.
In my experience, these places tend to be where rich people from cities own vacation property or can commute to a city for work. An example in Minnesota is the Brainerd Lakes area, which subsists almost entirely on people from the Twin Cities visiting their lake cabins from May to September. There are some nice small towns and plenty of beautiful homes, but it’s a result of outsiders bringing money in. Next door you have Aitkin County which is poor as hell because it’s basically a swamp/peat bog that has been partially drained for agriculture, 65% of the county is wetlands: https://www.mngeo.state.mn.us/maps/LandUse/lu_aitk.pdf
Most of rural America has been hollowed out to the point where local hospitals are closing. I’m not making any judgements about rural poor people, just that rural areas tend to be poor due to a lack of local economic opportunity.
But it's fallacy to think that lots of wealth hasn't further concentrated in cities over the last 50 years. A lot of my family is from upstate NY, and I remember visiting them as a kid and feeling like they were nice places. They have all deteriorated greatly since I was a child. E.g. people always complain about how expensive housing is in the US. Well, there are plenty of cheap places to live in upstate NY - housing costs in a lot of those places have lagged inflation for decades. The problem is nobody really wants to move to Cortland, NY.
The issue looks especially clear when you compare small towns in close proximity to big cities compared to further out. There are lots of vibrant, quaint small towns on Long Island, for example, because they get a ton of money from their proximity to NYC. I often think a lot of the upstate NY towns would look just like the "cute" Long Island towns (e.g. similar architecture and history) if they had an influx of money.
But it is an economically devastated state. Many families there, are in terrible shape.
I've heard similar about the tourist islands in the Caribbean. Paradise, with no money.
My wife's grandma, now in her 90's, lives in a >100 year old farmhouse that's crumbling and only 1/3 of the home is even heated. Hell installing the electric heaters and indoor toilet involved a ton of arm-twisting. She's been insisting she'll die any day for the last decade and refuses to move or renovate. Meanwhile my wife's cousin lives in the same town (is a remote worker) and lives in a super-modern new home that's built to a much higher standard than the average new home in Canada. Old people are just stubborn...
Anyhow the point is that things only get renovated when the owner wants to renovate it, it has nothing to do with wealth. In the city, land is worth $$$ so inevitably it gets bought and improved. In small towns, meh...