The conservation roof should be arranged for technical reasons. The wooden beams that are connected with metal joints into wooden-metal structures rely on longitudinal walls to ensure reliability and safety. Since the monument is used for the museum function, the roof at the Western Wall is elevated to preserve the possibilities of environmental review and archeological research. The form of the roof and materials are selected according to the general historical nature of the building. In the project are used the traditional materials, like wooden racks, beams, rafters, gont coatings.