The Byzantine and Christian Museum in Athens is a national museum of Greece. Its assets contain artifacts from Early Christian, Byzantine, Medieval, post-Byzantine and later periods. With over 25,000 assets, the museum’s collection dates from the 3rd century.
One interesting carving is a double-sided panel that depicts a gorgoneion on the front and a cross on the other side. It was discovered in Lechaion (Corinth) in 1984. The piece is significant because it shows the Christianization of decoration in ancient temples to adapt to the new religion.
See: http://www.byzantinemuseum.gr/en/museum/
