A 210 year old map of Cairo on Google Earth
Bibliotheca Alexandrina is hosting an interesting site called Memory of Modern Egypt which contains scans of photographs, documents and maps from 1800 till now.
They have a low resolution scan of a map of Cairo from 1800 in French. The city is the darker area. Notice the flood basin surrounding the Nile and how the Zamalek island looks weird compared to the Roda island (Manial) which looks almost like what it really looks like.
Overlaying …