THE $150 million landmark building by the internationally acclaimed architect, Frank Gehry, will be an evocative blur for most Sydneysiders.

The open harbour approach was already taken by Joern Utzon for his Sydney Opera House, perched atop its Bennelong Point pedestal.

Shape shifter ... the Dr Chau Chak Wing Building as it faces the street. Credit:Gehry Partners

Instead, the Los Angeles architect, described as the most significant of the age, is working within twisted alleys and streets laid out in convict-era Sydney.

Mr Gehry said his vision for the UTS business school building, unveiled yesterday, was embedded in the streetscape. Its power would pulsate through the crowded inner city, offering people passing by ''fascinating vignettes''.