There's a lot of really cool street art in this pedestrian underpass in Plovdiv, but unfortunately, I don't have pictures of much of it.
Somewhere in Plovdiv.
This is a swimming pool on top of Mladezhki Halm, the tallest hill in Plovdiv.
Somewhere else in Plovdiv.
Somewhere in Sofia.
This is at the bottom of a memorial built for Buglaria's 1300th birthday, which Seth blogged about here (at the very end of the post).
Near the ancient aqueducts in Plovdiv.
A couple by Plovdiv's graffiti artist Билко (Bilko). Jon mentioned him here and included a link to an article about him, which is in Bulgarian, but Google Translate can help with that.