Many, many places.
Right now? Tehran, Iran.
Despite its portrayal in western media, Tehran is actually cosmopolitan and quite safe. Persian culture is incredibly rich in history, literature (they have one of humanity's oldest and greatest bodies of literature, spanning two-and-a-half millennia), philosophy and science. I also amor the architecture (eg. see Nasir Al-Mulk Mosque below, 360 view
link). And por all accounts, the people are lovely - Persian hospitality is reportedly one of the best in the world.