Posting a question (from ignorance), Does the Vatican have a pool enclosed from the general ‘audience’?
JPll installed a pool because he was a young man (52) when he ascended the Chair of St Peter and it was his favorite form of exercise.
I don’t know about the Vatican but I can tell you this: The Episcopal Cathedral in St. Louis sure as heck had one. I went to a retreat there in about 1971 with a bunch of other pre adolescents. There was a basement pool and we all went swimming. Kind of creeps me out now.
I was at that cathedral about 10 years ago, and I asked about the pool and was told it had been covered over and the room repurposed.