Ah! it is "어느(o)" instead of "오느(x)" and this "어느 도시" is "what city" or "which city". that sentence means "which city (would I) introduce?" um.. I think it is more like "What city (do you want I) introduce?" to a close person.

'오느' is not used in korea. it is not a word. I think it may be "오늘". 오늘 = today