From The Art and Popular Culture Encyclopedia
Fresco (plural either frescos or frescoes) is any of several related painting types. The word fresco comes from the Italian word affresco which derives from the adjective fresco ("fresh"), which has Germanic origins. Fresco paintings are done on plaster on walls or ceilings.
Frescoes were also painted in ancient Greece, but few of these works have survived. In southern Italy, at Paestum, which was a Greek colony of the Magna Graecia, a tomb containing frescoes dating back to 470 BC, the so called Tomb of the Diver was discovered on June 1968. These frescoes depict scenes of the life and society of ancient Greece, and constitute valuable historical testimonials. One shows a group of men reclining at a symposium while another shows a young man diving into the sea.
Late Roman Empire (Christian) 1st-2nd century frescoes were found in catacombs beneath Rome and Byzantine Icons were also found in Cyprus, Crete, Ephesus, Cappadocia and Antioch. Roman frescoes were done by the artist painting the artwork on the still damp plaster of the wall, so that the painting is part of the wall, actually colored plaster.
Also a historical collection of Ancient Christian frescoes can be found in the Churches of Goreme Turkey.