The Stone Chronicle Museum, located on the site of State Flag Square, was opened on June 8. 2015, and was established by the Heydar Aliyev Foundation Many types of stone plastic art are displayed in the galleries of the Museum. The exhibition includes ancient stones, complete with petroglyphs, brought from the Gobustan and Gala reserves , gravestones relating back to the middle ages, household items and works produced by the sculptor Huseyn Hagvas. Visitors to the museum may view the historical developments and evolutionary stages of stone plastic arts in Azerbaijan through the exhibits on disolay. The Stone Chronicle museum is located in the building of a former power station built in 1901 by Siemens brothers and once provided the energy supply for local oil fields.