The art of Europe, or Western art, encompasses the history of visual art in Europe. European prehistoric art started as mobile Upper Paleolithic rock and cave painting and petroglyph art and was characteristic of the period between the Paleolithic and the Iron Age. Written histories of European art often begin with the Aegean civilizations, dating from the 3rd millennium BC. However a consistent pattern of artistic development within Europe becomes clear only with Ancient Greek art, which was adopted and transformed by Rome and carried; with the Roman Empire, across much of Europe, North Africa and Western Asia. The influence of the art of the Classical period waxed and waned throughout the next two thousand years, seeming to slip into a distant memory in parts of the Medieval period, to re-emerge in the Renaissance, suffer a period of what some early art historians viewed as "decay" during the Baroque period, to reappear in a refined form in Neo-Classicism and to be reborn in Post-Modernism. Before the 1800s, the Christian church was a major influence upon European art, and commissions from the Church provided the major source of work for artists. In the same period there was also a renewed interest in classical mythology, great wars, heroes and heroines, and themese not connected to religion. Most art of the last 200 years has been produced without reference to religion and often with no particular ideology at all, but art has often been influenced by political issues, whether reflecting the concerns of patrons or the artist. European art is arranged into a number of stylistic periods, which, historically, overlap each other as different styles flourished in different areas. Broadly the periods are, Classical, Byzantine, Medieval, Gothic, Renaissance, Baroque, Rococo, Neoclassical, Modern, Postmodern and New European Painting. Prehistoric art European prehistoric art is an important part of the European cultural heritage. Prehistoric art history is usually divided into four main periods: Stone Age, Neolithic, Bronze Age, and Iron Age. Most of the remaining artifacts of this period are small sculptures and cave paintings. Much surviving prehistoric art is small portable sculptures, with a small group of female Venus figurines such as the Venus of Willendorf (24,000–22,000 BC) found across central Europe; the 30 cm tall Löwenmensch figurine of about 30,000 BCE has hardly any pieces that can be related to it. The Swimming Reindeer of about 11,000 BCE is one of the finest