The art technique involving applying paint to wet plaster is called fresco. This technique has been used since ancient times, particularly in Renaissance art, to create mural paintings. In fresco painting, pigments are mixed with water and applied to a freshly laid layer of wet plaster. As the plaster dries, the pigments bond to the surface, creating a durable and lasting image. Frescoes are known for their vibrant colors and ability to seamlessly integrate with architectural spaces. Notable examples of frescoes can be found in historic buildings, such as the Sistine Chapel in Vatican City, showcasing the skill and artistry of their creators.