As you walk down the street in cities and towns across Australia from Perth to Benalla, Toowoomba to Melbourne, you might stumble across a seven-storey-high painting of a woman's face on a building; a giant echnida painted onto a wall; a tiny paste-up on the back of a telegraph pole. This glimpse of art on an otherwise dull street both transports and intrigues you: who was the artist? What is the story behind the painting? Street art photographer Lou Chamberlin is following on from the success of her book Street Art: Melbourne with Street Art: Australia, a celebration of street art across the country.