I just had some friends visit on the way to their home country, after spending 4 months traveling through Spain.

They liked Spain a lot, but the first comment they made when we went for a walk was how clean the streets and the surroundings where.

Your cleanliness mileage may vary per Land, I guess.

Not sure if you're being sarcastic or not - but in case you're not - seeing "10 cigarette butts" - instead of, say, piles of trash, dung, old broken down cars, and/or drug paraphernalia - seems pretty clean to me, as cities come.

Yeah, it's amazing how different peoples' expectations are. A bunch of cigarette butts would seem horrible compared to a Japanese train station, but compared to anything in Latin America it would be extremely clean.