If Tehran is the administrative capital of Iran, Isfahan is definitely the touristic one. It’s the only place in the country where I found a « tourist police » (the Iranian tourist information center, with a policeman who speaks English and very officially welcomes you to Iran, to Isfahan, gives you a map of the city and is at your entire disposal, should you require any further help or guidance). The main square is very impressive, one of the biggest in the world, and is a UNESCO something, but it is not was this series of pictures is about. There is indeed a lot more to Isfahan than just its main square I was for example living in the very old Armenian district, which was very nice, with its nice coffee places, narrow cobbled streets and old houses.
(for pictures of the main square though, it’s this way).