2012 was a great year for all aspects of graffiti. On the streets, writers around the world dropped pieces that captured our imagination and propelled the art forward. The artists were helped along by a few advances in the tools of the trade too. And, of course, galleries around the world continued to embrace the potential of transferring street art to fine art spaces. One lucky guy even became a millionaire.

We look back at the 10 defining moments that capture the highs and lows of graffiti in 2012.

RELATED: Green Label - A Look at the Best Graffiti Spots in the World

Written by Topsafe London.