In 1964, during the archaeological investigations held in the north part of the Maiden Tower, was discovered arched monument having an interesting structure. This significant monument is the religious-architectural complex colonnade with pointed arches which  constructed for religious purposes and dating back to the XII century. Among the gravestones  which found in the courtyard of the 15th century monument existed pre-islamic burial places.The location of the monument on several cultural layers  indicates its ancestry and  place of worship for centuries. Currently, there is the open-air exposition called “Art of stone carving” . The exposition shows   the history of the monument, the initial steps of artistic stone art, epigraphy, burial ceremonies, as well as  symbol and inscription  of gravestones.

      The main responsibilities of Administration of the State Historical Architectural Reserve Icherisehehr are to preserve the architectural monuments,explore and  propogate cultural heritage to future generations as well as to develop tourism sector. The Reserve Department, following the protection regime, determines the recreational area, as well as conducts archeological rescue operations.   With an aim of investigate the history of ancient Baku, rescuing archaeological exploration is carried out   to explore monuments that have been left undetermined and have not been investigated yet. In recent years, significant  works have been done in the tourism infrastructure of Icherisheher. Two centuries ago, the ancient city of Baku, called Icheri Sheher, has now become a modern tourist center. Architectural monuments and historical sites which were investigated by the Reserve Department  are conserved and used for tourism purposes. Historical-architectural monuments discovered as a result of archaeological excavations in the area can be mentioned as an example.