Cultural Map of Hellas
Index of Maps of Ancient Greek World
Interactive Map of Ancient Greece
Greek Landscapes Maps and Satellite Images
Map of the Ancient City of Rome
Atlas of the Greek & Roman World
Maps of the Ancient Roman World
Topography and Monuments of Ancient Rome
Byzantine Empire in the Sixth Century
Maps of the Byzantine Empire

National Geographic Map Machine: Access many types of natural and demographic geographic data through this fantastic site.
Quick Maps: Small GIF maps of the countries of the world.
TerraServer: Search contemporary geographical and topographical maps, as well as sattelite imagery
Library of Congress Map Collections
Thousands of high resolution, publication quality historical maps from 1544 to present from the Library of Congress' extensive map collection.

Historical Atlas of the 20th Century
Large collection of color-coded atlas maps showing world population, governments, wars, and other historical trends. Many include brief historical commentaries.