You can’t forget about nature. Even if the closest thing to you is a paved path through some woods, it’s good to get outside sometimes. Maybe something a little more wild than a city park if possible. Don’t have to go all the way off the beaten path, though, but it’s up to you where you want to go.
The world isn’t just people, there’s animals and plants and all that. Humans came from nature once. There are definitely interesting things to see there. I even find animals that roam the city interesting, like crows or squirrels and that type of thing. Sometimes used to people enough that you could get close, but don’t be reckless. Maybe feed the ducks, they’re fun.