Lüshun Port (formerly Port Arthur)

Lüshunkou is a district in the municipality of Dalian, Liaoning province, China. Also called Lüshun City or (more literally) Lüshun Port, it was formerly known as both Port Arthur and Ryojun.

Lüshunkou is located at the extreme southern tip of the Liaodong Peninsula. It has an excellent natural harbour, the possession and control of which became a casus belli in the Russo-Japanese War (1904–1905). Japanese and then Soviet administration would continue until 1953. During the first decade of that period, it was world famous and was more significant than the other port on the peninsula, Dalian proper. In Western diplomatic, news, and historical writings, it was known as Port Arthur, and during the period when the Japanese controlled and administered the Liaodong (formerly Liaotung) Peninsula it was called Ryojun.