The document discusses Greek classical art from 450-400 BCE. Some of the key structures from this period in Athens include the Erechtheion, Parthenon, Propylaia, and Athena Nike Temple. Characteristics of architecture included triglyph-metope friezes on the pediments with straight horizontal and vertical lines that bowed inward. The East Pediment contained detailed carvings and the Parthenon's triglyph-metope frieze had a total of 92 sculptures.