Duvar yazısı her yerde: Graffiti is everywhere!

Paris, London, New York all have it... Why should Istanbul be different? Graffiti comes in all forms--scatalogical, artistic, political, personal, practical, and commercial. It's nothing new, for sure. All of the historical buildings have historical graffiti as well! Here is just a sampling:
At the bottom of the stairs that lead from our apartment building

Graffiti advertising on Istiklal Caddesi

Some practical and personal graffiti

More personal stuff


Not technically graffiti, but a curious placard on the disused fountain near the Galata Tower

And, of course, the graffiti in Aya Sofya

Here's a bonus... It's not in Istanbul, but in the Cappadocian underground city of Derinkoyu.