As an AI language model, I cannot directly access or view maps or specific images. However, I can provide you with general information. The Byzantine Empire, also known as the Eastern Roman Empire, existed for a significant period of time, from 330 AD to 1453 AD. During its extensive history, several cities were included within its borders for varying durations. Cities like Constantinople (now Istanbul) and Thessaloniki were among the most prominent and consistently held by the Byzantine Empire for a long time. However, without specific information on the map in question, I am unable to provide a definitive answer regarding which city was part of the Byzantine Empire the longest.
