I've heard an argument that there's no reason why hospitals are so ugly - they are supposed to heal patient,

That makes perfect sense how you say it. Never thought about that!

here's one picture where you can see it in the background.

Oh man, that's quite a difference. They should def. hang some art on the walls! I did know that patients "heal better" or something when they have something inspirational/motivational/just beautiful on the wall.

Too bad that fence in the way though Celestal xD