Me at Longacre Park, Indianapolis.
The year was 1973.
I can't say we went swimming there though. It was more like wading or bobbing.
We took plenty of swimming lesson there but I didn't learn to really swim until middle school.
I do remember the water slide they had and it seems like they also had some sort of barrel bolted under the water. Kids would try to stand on it and it would spin or they would swim under it.
I am sure nothing like that would ever be allowed in a pool today.