This is Chrono Cross' pre-rendered backgrounds upscaled through Gigapixel AI.
It has been two decades now, but I have to say this is still the best audiovisual delight I've had the pleasure to experience. An achievement in every possible way

More Chrono Cross goodness

Few soundtrack makes me want to stuff my face into a pillow and scream as hard as possible to get all the melancholia that Chrono Cross emits at every moment out of my system. Too powerful