The British Museum
British Museum: Explore World Cultures: Sumerians
Learn about the culture and art of the ancient Mesopotamian Sumerians in this historical overview with accompanying image gallery of art object with detailed descriptions, from the British Museum collection.
Other
Dia Galleries; Ancient Art: Gudea of Lagash
This resource has a description and images of the statue called Gudea of Lagash. There is also a translation of the writing on the statue.
Khan Academy
Khan Academy: Arts and Humanities: Art of Asia
A landing page for a course on the art history of Asia.