It is the sunlight that defines the spaces of Islamic architecture and reveals its geometric lucidity and intellectual clarity; Revzen-i Menkuş (Fresco windows) adds meaning to the light. Revzen-i Menkuş (Fresco windows) are fixed window glasses decorated on the interior surfaces of the mosque walls.

Freso windows in Turkish architecture are of great importance in terms of both plaster and glass art. The Turks used the window not only as a lighting element but also as an aesthetic figure in their monumental buildings like mosques. Geometric decorations and classical decoration art’s original motifs such as pomegranate flower, tulip, and clove can be seen in the fresco windows. In the building book of the Süleymaniye Complex, the names of the glazier masters were included among the artisans; these masters were called as “camgeran”. By the art they perform, camgerans prepare the architectural structure for the believers in a completely different place of worship using the changing daylight at every hour of the day.

Ottoman mosque windows have reached a unique form with double glazed mechanism. Despite the use of colorless and geometric cut glass in a gypsum frame in the honeycomb window called exterior, there are colorful fresco windows with an artistic value that cannot be discussed. Revzen-i Menkuş masters of Teknom Yapı like other masters, are masters with exceptional restoration experience and they sometimes produce original and sometimes classical patterns in accordance with the traditional method, architectural and ornamental program.