Location: Alekseevsky district, Bilyar
The complex covers an area of 3,840 hectares including an original set of surviving natural features. They characterise the natural conditions of the wooded steppe area of eastern Europe from a historical point of view. A concentrated array of various archaeological monuments from almost all epochs, from the Bronze Age to the late medieval period, remains of felled tree barriers of the Russian State in the 17th century. Historical and cultural monuments linked to the names of the Academicians Butlerov and Arbuzov and others. In 1992 a museum-reserve was set up with the aim to preserve the complex.