You ever been to a city that's not San Francisco?
Of course; my point was never that it's a ubiquitous practice in the US, only that it definitely exists in places.
One that's newer?
Sure (Seattle is newer, for instance), but that's obviously not what you mean.
I think we're talking about different types of cities
new, rural, small incorporated cities are certainly very different than "capital C" Cities. I'm guessing this is the real distinction that we're talking about..
Your local city college may or may not offer free classes (in San Francisco, you just need to show proof that you live in the city with some legal status).
Some public transportation is free for certain groups (youth and folks experiencing homelessness can get free passes here).
"First X of the month" at the zoo/a museum/whatever
lots of venues have free events.
A jog, bike ride, hike
lots of great stuff outside!