Alexander III first visited this area on July 15, 1880, when he was the heir to the throne. Together with his wife Maria Feodorovna, he arrived from St. Petersburg in Kotka by ship, and then traveled on horseback to the Langinkoski rapids, a well-known trout fishing spot. The successful fishing and surrounding nature impressed him, and, according to legend, he said: "I will definitely return here."

Four years later, already being the emperor, Alexander III spent two weeks with his family on the Finnish shores and visited these rapids again for fishing. It was then that he had the idea to build a house here. The wooden house was constructed according to the designs of Finnish architects.

Alexander III visited here eleven times, while his heir Nicholas Alexandrovich came twice. The last visit of the Russian emperor and his family to the Langinkoski estate took place in 1906.

During World War I, a hospital was located here. Later, the estate began to deteriorate and was nearly dismantled. However, thanks to the efforts of several enthusiasts, the house was preserved, and by 1933, a museum was opened here.

In 1989, the centenary of the house in Langinkoski was celebrated, attended by the grandson of Alexander III, Tikhon Nikolaevich Kulikovsky-Romanov, the son of Grand Duchess Olga Alexandrovna.

Today, Langinkoski attracts many visitors due to its status as a nature reserve. It includes a waterfall with rapids and a dendrological park with a variety of trees, featuring walking trails and bridges. Entrance to the reserve is free year-round, but a license is required for fishing.

The museum hosts theatrical tours on Saturdays.