Byzantium Nunc Costantinopolis
Map of Constantinople
Map of Constantinople, with Yedikule Fortress Treasury in the top left, both enclosed within city walls, and secluded by itself.
http://booksandjournals.brillonline.com.ezp-prod1.hul.harvard.edu/content/journals/10.1163/007865209x12555048403457
British Library, Maps K. Top
1573-1618
Zara Sternberg
Map