Daniel 8:2-3

2I looked in the vision and it seemed that I was at the citadel of Susa, [the capital of Persia], which is in the province of Elam; and I looked in the vision and I saw myself by the Ulai Canal.

3Then I raised my eyes and looked, and behold, there in front of the canal stood a [lone] ram (the Medo-Persian Empire) which had two horns. The two horns were high, but one (Persia) was higher than the other (Media), and the higher one came up last.