One thing about city life in the 60’s- NOTHING was off limits. It’s a wonder we’re not all dead!
Anything in sight was game. This meant climbing up scaffolds to the top, crawling under parked cars, going on roof tops to get lost balls, climbing fences (with barbed-wire) to get into places, hanging onto back bumpers of trucks for a ride (usually in snow), and looking for “treasures” in old boarded up houses.
I’d kill my kids if I ever caught them doing those things!