Mural painting is an art that is painted and applied to the wall, ceiling or other permanent surfaces that are sufficient in size. The technique used is called fresco, where the paint is applied on plaster on walls and/or ceilings. The pigment is mixed with water on a small layer of wet lime mortar or plaster, where it is later absorbed. After several hours, the plaster dries while reacting with the air. This creates a chemical reaction making the pigment stick to the plaster. Over a long period of time, the painting will end up with brilliant colors. One of the main mural paintings is four meters in diameter located on the central apse. There are several holes, due to excess moisture, on the original mural painting on the central apse that have not been restored. A polychrome wood carving and other objects are also located inside the church, some of which were successfully restored.