On Vacation Guide Book Erzurum | Page 23

3 . B A S T I O N S The history of the first bastions built in Erzurum dates back to the Ottoman - Iran war from the 18th century . However , the largest bastions were built as of the beginning of the 19th century in order to stop the invasions and attacks of the Russians to Eastern Anatolia . As many as 22 of these strategic structures that were constructed on the hills with high viewpoint around the city . These bastions which have headquarter buildings , army barracks , training areas , eating and drinking sections , reservoirs and ambush rooms are sometimes they are composed of a combination of a number of large structures . The most important bastions which have different dimensions and positions are Mecidiye and the Aziziye bastions which are to on east of the city . Whereas the bastions are completely constructed out of cut stone , principles of robustness and usage were stressed rather than architectural style . The bastions which consist of adjacent rooms are covered with a layer of thick soil . Places like depots , infirmaries were positioned in the gathering areas of the soldiers on the opposite side of direction through which the enemy would come . Whereas there are the rooms of the barracks on the widest part of the bastions , these have been constructed in connection with each other and in a rectangular shape . The width of the rooms is 3 . 00 - 4 . 00 meters and their depths is 6 . 00 - 14 . 50 meters . Some of these rooms which have only one storey mostly have been divided into two with wooden beams in order to gain space thereby being transformed into two storeys . The Mecidiye and Aziziye Bastions which are to east of Erzurum have had a critical function in the 1877 - 1878 Ottoman - Russian Was also known as “ 93 War ”.