Usually, people in general keep their own home and town cleaner than when they go visit another city. The reason is because they will be leaving that city so to them it doesn’t matter if it is left a mess. They won’t be there to deal with the trash that they left behind. Many tourists at specific tourist attractions like amusement parks and landmarks really keep it dirty.
They throw their trash onto the ground without even thinking about picking it up. Many tourist attractions hire people to keep the place clean. They go around and pick up the litter that is left behind. Tourists should make sure to pick up after themselves as well as the attractions providing plenty of trash cans.