On Saturday a workshop would be held for those in their teens and early 20s, tackling the toilet block on the Tongariro Domain and giving it an artistic touch.
The workshop, which was already full, was being taken by one of New Zealand's most well-known street artists, Tanja Jade, and people could keep an eye on the group's progress from 10am.
Ms Hawker said there would be a map available for those wanting to visit the various sites, some of which were hidden down alleys: "You'll be able to see which artist is working on which site."
Among the venues to be transformed will be the walls of HiFashion in HeuHeu St and Starlight Cinema.
Mr Liew said the street art was more than just decoration.
"It's not surprising that the compulsion that drives artists to work with such a challenging site also affects the tone and content of their work. It takes passion to deal with the unpredictable nature of what you face when making art out in the streets.
"Public scrutiny, the rain, the wind, the unpredictable surfaces are just part of the challenge. If an artist is going to endure this then it makes sense that their work reflects the passion that drives them outside in the first place," he said.
Artists from Russia, North America, Colombia, South Africa and New Zealand will be on display.
