Monumental painting is directly related to architecture.
The more it highlights and complements the style of a building, the more it deserves the name monumental.
Painting that adds nothing new to the style of the building is called decorative painting.
A typical example of monumental painting is painting on Egyptian, Pompeian and later Renaissance buildings.
The task of monumental painting is to emphasize form and style, which is only possible with the greatest harmony between painting and architecture.
In this case, it is not an independent phenomenon, but strongly subordinated to architecture.
Decorative painting, whose task is rather to beautify architecture, must also harmonize with style.
Monumental painting dates back to the beginning of deep antiquity and achieved its greatest development long before the period when it became an independent discipline: easel painting.
The base for it is not a canvas, but walls that require appropriate preparation and special materials.