Lvshunkou (旅顺口区 Lǚshùnkǒuqū) is in Liaoning.
Formerly known as Port Arthur, this small city an hour to the South of Dalian used to be difficult for foreign tourists to access, but has since opened up a lot. Military areas are still off-limits of course, but whether or not PSB clearance is still required to visit the city's tourist sites is unclear, but the tourist infrastructure in place and large numbers of Russians, Koreans and Japanese visiting on a regular basis suggests that even if permission is still technically required, in practice it is not.
Anyone interested in the Russo-Japanese War, the Japanese occupation of China, Russian and Japanese colonial history in China and/or Manchukuo, will find much of interest in Lvshun.
Direct buses leave from Victory Square opposite Dalian Station. About one hour, 7 Yuan. Buses also leave from Heishijiao in Dalian, take 40 minutes and also cost about 7 Yuan.
Taxis and (unofficial) tour guides will be waiting at Lvshun's long-distance bus station. Buses also go to the major tourist sites. If you negotiate with the guides that will approach you, it is possible to get someone to drive you to all of the sites, and give you some information on the way.
The site of an important siege during the Russo-Japanese War. A tourist site since the Japanese victory here.
Prison used by the Japanese during the colonial era.
A good place to look down on the city, including its strategic harbor and naval facilities.
Buses to Dalian and other areas leave regularly from the long-distance bus station.