Answer:
Because artwork can convey elements of an idea or culture in a way nothing else can. Universal artistic elements are consistent across cultures and these can explain things in a way similar to language.
Islamic art encompasses the visual arts produced in the Islamic world. ... It comprises both religious and secular art forms. Religious art is represented by calligraphy, architecture and furnishings of religious buildings, such as mosque fittings (e.g., mosque lamps and Girih tiles), woodwork and carpets.