The Orb House, the uber-modern Kew trophy, has been listed for sale.
The 2010-built home, which was shortlisted for the Australian Institute of Architects Victorian Awards the same year, was created by architect Bojan Simic.
A year later it sold for $5 million, before going backwards in 2014 when selling for $4,928,000.
It was back up for sale with $5 million plus homes in 2015, but failed to find a buyer.
Set high on the hill in Kew, it was built during 2009 by WAF Constructions on its 580 square metre Molesworth Street block.
Kay & Burton Hawthorn agents Sam Wilkinson and Tom Staughton have a $5.5 million to $6 million guide.
It is four bedrooms and five bathrooms, with 495 square metres of space with a facade a huge wall of glass.
There is a giant circle cut-out on the wall behind and a staircase forming an exaggerated zigzag below.
This article was first published in the Weekend Australian.