Sites and Monuments of Ancient Athens. A collection of images of ancient monuments and buildings in Athens, incl. Parthenon, Agora, and so forth.
Ancient Greek Links. Large collection of links to images, texts and maps of Ancient Greece.
Bulfinch's Mythology. Annotated, illustrated on-line edition of this famous text on mythology.
Diotima's Art Links. Links to images and information, primarily about issues of women and gender in the Ancient World.
Etymological Dictionary of Classical MythologyA small, but interesting collection of words derived from myth, their meaning and etymology.
Illustrated Encyclopedia of Greek Mythology. Short reference guide to gods, heroes, terms, and so forth. There is a nice illustrated summary of Hercules' labors here too. N.B. the Latin version is not grammatically sound.
Loggia: Exploring the Arts and Humanities. Loggia has quite a few links to sites on art and art history, architecture and design, decorative arts and industrial design, including Classical sites.
Morford and Lenardon, Classical Mythology Online. Great help for studying the textbook; it provides useful summary, commentary, bibliographies, activities and quizzes.
Olympian Gods. Images of gods and texts listed alphabetically by god. Maintained by Dr. Laurel Bowman of the University of Victoria, Canada.
Perseus Project Home Page. Perseus has texts, information on Greek art and archaeology, subject/author search engins, and secondary sources on mythological and historical topics. Site developed and maintained by Tufts University.
Shrine of the Goddess Athena. Site dedicated to images and links to all aspects of the worship of Athena in the Greco-Roman world. Though limited in focus, this is a great site.