The Juma Mosque Complex always distinguished with its volume and silhouette among cultic and civil monuments of Azerbaijan because of the correlation with earlier monuments of Islamic architecture, keeping its composition centre.
The only extant sketch of Juma Mosque was made in 1847, by Russian architect G.Gagarin from life, who portrayed architectural monuments and other cities of Azerbaijan in his pictures.
Just these pictures make an idea about the external look and internal ornamentation of old Juma Mosque.
The ancient internal planning organization of the mosque has been kept till now, in spite of the multiple reconstructions.
Three-hall structure of the mosque, three-section internal area covered with central and not great side cupolas are seen on G.Gagarin’s pictures.
The central pointed dome, pillars of side sections and oblong interior of the main hall of warship makes Juma Mosque similar with Juma Mosque of Derbent.
Plan of the mosque is rectangular, sizes of the mosque’s are 46 meters length and 28 meters width, the mosque has a large warship hall, divided into three separated quadratic sections related with each other by open and large apertures.
Each prt of the mosque has separate mihrab and aperture for entrance.
Juma Mosque is called three-hall mosque because of a such plan.
Such kind of planning reminds of planning organization of the well-known Great mosque of Umayyads in Damask, which was built in 708.
Juma Mosque of the 8th century in Aghsu, which was destroyed during the fire in 1918, was differed with analogical planning.
The frequent constructions enabled to keep initial internal outlines and foundation of the mosque in whole, though the internal ornamentation and some details of external façade suffered definite modifications.
Archeological researches showed that, plan of the building remained invariable, in spite of the multiple reconstructions.

Most considerable modifications on the architectural structure of the mosque were made on Józef Plośko’s project.
The architect added elements of the Eastern architecture, taking traditions of Islamic architecture as a principle of that time to his project.
Planning structure of Juma Mosque should be supplemented with dynamic content and special picturesqueness in Józef Plośko’s interpretation.
Eliminating side abutments of the warship hall, the architect tried to create most solid and monumental interior.
For creating the same size of three halls of the mosque, the architect with specific artistic-plastic expressiveness conceived non-traditional construction, the metallic carcasses of which were produced in Warsaw for Shirvan zone of the cupola.
For strengthening significance of the composition, Plośko developed high multiple-window lodgement to which the central cupola leaned on.
There should be four decorative minarets around it.
Ornamental decorations, shebeke (window frameworks with gashed patterns) and decorative pillars were also intended to be in the project.
The Juma Mosque Complex always distinguished with its volume and silhouette among cultic and civil monuments of Azerbaijan because of the correlation with earlier monuments of Islamic architecture, keeping its composition centre. The only extant sketch of Juma Mosque was made in 1847, by Russian architect G.Gagarin from life, who portrayed architectural monuments and other cities of Azerbaijan in his pictures. Just these pictures make an idea about the external look and internal ornamentation of old Juma Mosque. The ancient internal planning organization of the mosque has been kept till now, in spite of the multiple reconstructions. Three-hall structure of the mosque, three-section internal area covered with central and not great side cupolas are seen on G.Gagarin’s pictures. The central pointed dome, pillars of side sections and oblong interior of the main hall of warship makes Juma Mosque similar with Juma Mosque of Derbent. Plan of the mosque is rectangular, sizes of the mosque’s are 46 meters length and 28 meters width, the mosque has a large warship hall, divided into three separated quadratic sections related with each other by open and large apertures. Each prt of the mosque has separate mihrab and aperture for entrance. Juma Mosque is called three-hall mosque because of a such plan. Such kind of planning reminds of planning organization of the well-known Great mosque of Umayyads in Damask, which was built in 708. Juma Mosque of the 8th century in Aghsu, which was destroyed during the fire in 1918, was differed with analogical planning. The frequent constructions enabled to keep initial internal outlines and foundation of the mosque in whole, though the internal ornamentation and some details of external façade suffered definite modifications. Archeological researches showed that, plan of the building remained invariable, in spite of the multiple reconstructions. 
Most considerable modifications on the architectural structure of the mosque were made on Józef Plośko’s project. The architect added elements of the Eastern architecture, taking traditions of Islamic architecture as a principle of that time to his project. Planning structure of Juma Mosque should be supplemented with dynamic content and special picturesqueness in Józef Plośko’s interpretation. Eliminating side abutments of the warship hall, the architect tried to create most solid and monumental interior. For creating the same size of three halls of the mosque, the architect with specific artistic-plastic expressiveness conceived non-traditional construction, the metallic carcasses of which were produced in Warsaw for Shirvan zone of the cupola. For strengthening significance of the composition, Plośko developed high multiple-window lodgement to which the central cupola leaned on. There should be four decorative minarets around it. Ornamental decorations, shebeke (window frameworks with gashed patterns) and decorative pillars were also intended to be in the project.
Juma Mosque, Shamakhi