Oktyabrskaya, 5, Museum in Tobolsk, Russia

Oktyabrskaya, 5 is a museum of Siberian history in Tobolsk, housed in an ochre-colored brick building that contains exhibits dedicated to the exploration and development of Siberian territories. The exhibition halls display maps, research documents, and artifacts that illustrate how these regions were systematically studied and recorded.

The museum opened on 11 September 2010 in the house on Bolshaya Petropavlovskaya Street (now Oktyabrskaya, 5) where the forester and ethnographer Alexander Dunin-Gorkavich lived and worked until 1927. The idea came from RAS president Yuri Osipov and Viktor Rodin, director of the Tobolsk research station, and a 2009 agreement between the Russian Academy of Sciences and the Tyumen regional government funded it. A basement exhibition hall opened on 24 June 2011.

The museum emphasizes the role of scientific research in understanding the vast Siberian landscape, with displays showing how explorers documented their discoveries through maps and field notes. Visitors can see how this documentation shaped European understanding of the remote eastern territories.

The museum occupies the main house of Dunin-Gorkavich's preserved estate in the upper town at Oktyabrskaya 5, formerly Bolshaya Petropavlovskaya. The memorial estate is a regional cultural heritage site. The building is a structural unit of the Tobolsk Complex Scientific Station of the Ural Branch of the Russian Academy of Sciences, so visiting may depend on the station's opening arrangements.

The museum occupies the main house of the preserved estate of Alexander Dunin-Gorkavich, who lived and worked there until 1927. Its memorial study holds his personal belongings and manuscripts, and the estate is listed as a regional cultural heritage site.