 Nagorno Karabakh and adjacent territories belonging to historical Artsakh (some of which fell under the Nagorno-Karabakh Republic's control in 1992-1994) has been called an open-sky treasure-house of various forms of Armenian architecture.Overall, Nagorno-Karabakh hosts several thousand architectural artifacts and historical monuments in a larger sense.In addition to ecclesiastical structures, this number includes samples of civil architecture, ancient castles and fortresses as well as numerous khachkars.