But on the inside is half a million dollars' worth of art by some of New Zealand's finest artists.
The Real Art Roadshow, the brainchild of Wanaka-based art curator Fiona Campbell, is travelling to secondary schools around the country, to give pupils an "up close and personal" view of works by artists such as Ralph Hotere, Tony de Lautour, Dick Frizzell, Simon Ogden, Wayne Barrar, Octavia Cook, Don Driver, Sarah Munro, Sylvia Siddell and Harry Watson.
Yesterday, the 78sq m road show trailer was at King's High School, in Dunedin, with a display of more than 60 pieces of original post-1945 New Zealand visual art.
The idea of bringing real art to secondary school pupils in geographically isolated locations throughout New Zealand was brought to fruition by Ms Campbell and art curators Rob McLeod and Gerald Barnett.
Before a visit by the road show, few art pupils had the opportunity to see the true scale, texture and colour of works of art, Ms Campbell said.
Instead, they relied on textbook illustrations and website representations.
"It's not just about art - it's about helping students broaden their creativity, which is fundamental to helping these young people become well-rounded adults," she said.
