>>7505536Hey OP, I tried my hand at cleaning this up and playing with the colors. The reason they seem so blurry/out-of-focus is it seems the ones you posted were blown up from the original artist's resolution.
According to a reverse image search, a lot of these pieces are found here:
https://milvarusso.com/blog/our-trip-to-centara-grand-mirage-beach-resort-pattaya/ That redirects from the URL I named this file after.
So trying to clean up the color noise, add my own color gradient to the sky, etc. are do-able, but to tweak each one for a simple color correction will be very time-consuming. Even then, it doesn't add detail to the objects in the foreground, so you're out of luck there.