Rev. 17:18 And the woman that you saw is the great city that has dominion over the kings of the earth.
In John's day, this could only mean Rome.
Rev. 17:7 But the angel said to me, "Why do you marvel? I will tell you the mystery of the woman, and of the beast with seven heads and ten horns that carries her.
What are these seven heads?
Rev. 17:9 This calls for a mind with wisdom: the seven heads are seven mountains on which the woman is seated.
This, again, can only mean Rome. https://www.britannica.com/place/Seven-Hills-of-Rome
In John's day, this could only mean Rome.
Rev. 17:7 But the angel said to me, "Why do you marvel? I will tell you the mystery of the woman, and of the beast with seven heads and ten horns that carries her.
What are these seven heads?
Rev. 17:9 This calls for a mind with wisdom: the seven heads are seven mountains on which the woman is seated.
This, again, can only mean Rome. https://www.britannica.com/place/Seven-Hills-of-Rome