This reproduction is permitted under the Australian Copyright Act, sections 65–68 , which state (emphasis added):

• (65) (1) This section applies to sculptures and to works of artistic craftsmanship of the kind referred to in paragraph (c) of the definition of artistic work in section 10 . (2) The copyright in a work to which this section applies that is situated, otherwise than temporarily, in a public place, or in premises open to the public , is not infringed by the making of a painting, drawing, engraving or photograph of the work or by the inclusion of the work in a cinematograph film or in a television broadcast.
• (66) The copyright in a building or a model of a building is not infringed by the making of a [reproduction].
• (68) The copyright in an artistic work is not infringed by the publication of a [reproduction] if, by virtue of section 65, section 66 or section 67, the making of […] did not constitute an infringement of the copyright.

This freedom applies to two-dimensional works only if they are considered "artistic works." See COM:CRT/Australia#FOP for more information.