Most links via Best of History Websites. For a more detailed description of each site, you should visit their informative site.
The British Museum: Mesopotamia (British Museum) Internet Ancient History Sourcebook: Mesopotamia (Fordham University) Art of the First Cities: The Third Millennium B.C. from the Mediterranean to the Indus (Metropolitan Museum of Art) ABZU (New York University) Ancient Near East and the Ancient Mediterranean World (University of Chicago) | Oriental Institute Virtual Museum Treasures from the Royal Tombs of Ur (University of Pennsylvania Museum of Archaeology and Anthropology) Ancient Near Eastern Art: New Light on an Assyrian Palace (Raymond and Beverly Sackler Gallery for Assyrian Art) Collection: Collapse of Ancient Civilizations (Annenberg/CPB) The Ancient World Mapping Center (University of North Carolina at Chapel Hill) | Mesopotamia (Washington State University) Mr Dowling's Electronic Passport: Mesopotamia (Mr. Dowling) Odyssey Online History Links 101: Ancient Mesopotamia |