Metropolitan Museum of Art
Metropolitan Museum of Art: Heilbrunn Timeline of Art History: Ancient Greece, 1000 b.c. 1 a.d.
An extensive site that includes an interactive timeline of Greek art. Clicking on hyperlinks take you to a detailed discussion of the individual works of art. Included are photographs of Greek architecture. A great resource for the study...
Other
History of Painting: Greek and Roman Painting
This resource, although focusing more on Greek painting, contains some insight information on ancient Roman painting, primarily the Roman frescoes.