the potential for cultural exchange in a medium like graffiti is enormous, as it stimulates local and international interaction on many levels.

while more and more carioca artists are being invited to cities around the world, to leave their mark abroad, foreign artists are also coming to rio to explore first hand, what is happening here.

rio's biggest graffiti wall is in praça mauá, in the port area of the city - an accomplishment by artist tomaz viana, the astonishing piece is located on rua coelho e castro andit  is 30 m high by 70 m wide.