The site of Prince Su's Mansion is a two-story Russian-style building with a masonry structure. The surrounding area covers an area of more than 2,700 square meters, of which the building area is 470 square meters. This building was originally a Russian villa and was returned to the Japanese after the Russo-Japanese War. All, in February 1912, Prince Qing Su fled from Beijing to Lushun after the fall of the Qing Dynasty that had ruled China for nearly three hundred years. The Japanese military turned this building into the residence of Prince Su. Prince Su's Mansion is now a military station. The exterior of the building has been repaired and the original appearance has been changed, but the interior is basically the same.