Shushan in the Bible

The words of Nehemiah the son of Hacaliah. And it came to pass in the month Chislev, in the twentieth year, as I was in Shushan the citadel,

In the month of Chislev, while I was in Shushan at the palace, Hanani, one of my brothers, arrived with some men from Judah. I asked them about the Jews who had escaped, about those who had survived the Babylonian captivity, and about Jerusalem.