For any other Byzantinophiles out there (yes, I just made up a word), fans of art, history, art history, and all of the above:
https://tricivenola.wordpress.com/
This very talented woman is posting a series of drawings she is doing around Istanbul, including Hagia Sophia, the ruins of the Boukoleon, and other parts of the city. I’m a huge fan of drawing, being an avid doodler myself, and her work is very detailed and stunning. Please check it out!