@rah 22 September 2021 more from that month

So a couple of nights ago I hit you with a couple of facts about where I live and where I am from and the tallest manmade structures in the world. So here is another one. I don't live in Rome or The Vatican but from a certain perspective it could be said that I "live" in two Capital Cities. For my Polish friends on here like @ScarletBlack this one should be quite easy but for the rest of you can you figure it out? Have fun trying :D