The artist group Osgemeos (twin brothers) has produced some impressive graffiti inspired installations. I especially appreciate that their work can be read at a distance but also contain narrative details worthy of a closer look. These images were found on their website here . Check it out to see more of their impressive body of work.
I love how they describe their art-making in the video below. I especially relate to the following quotes:
"If we go a day without creating, drawing, it's a day we lost."
"We always drew ever since we were really small. For us it was kind of like a religion. Our moment of prayer."