re: Cleanest major cities

Not US, but Vienna, Austria, and it’s not particularly close for me. Place was so absurdly clean that you almost didn’t want to touch anything. Felt like a museum.

On the more “lived in” side, major cities in Japan are impressive. There’s a culture of carrying your trash with you (even food trash) until you have a place to throw it away. Doesn’t matter how far you have to go, or how long you have to hold onto it. And for the rare piece of trash that makes it to the ground, you have guys walking around wearing literal sashes across their chests, picking up trash like it’s their solemn duty.