Although it is also in the territory of Turkey, you can see the flag of Greece after passing the wall. After passing this iron gate, you will be South Cyprus. You can't come back in the past, so don't go there.
The Leventis Municipal Museum is located in the old city of Nicosia. It introduces the history of the city of Nicosia and fully witnesses the ethnic conflict and political estrangement on this island. It is open for free!
A lot of cultural relics and books recording local customs
A small museum is mainly a historical record of several developments in Cyprus.