City of Constantine

Mapping the remnants of Roman / Byzantine Constantinople in Istanbul

The New Penguin Atlas of Medieval History

The New Penguin Atlas of Medieval History

Colin McEvedy

The medieval world's wild territorial fluctuations, mapped and annotated from the 4th to the 14 c. Pre-requisite: an opinion on what neat lines and borders mean in a world before the nation-state.

https://www.amazon.com/New-Penguin-Atlas-Medieval-History/dp/0140512497