Along with the bronze pigs, Burt Flugelman’s sculpture Spheres is the other landmark of Rundle Mall. The Hindmarsh Building Society donated it in 1977 to the City of Adelaide to mark the society’s centenary. Since then it has become an Adelaide icon and is fondly known as the “Malls Balls”. 

The image of the two connected spheres graces T-shirts, key rings and posters of Adelaide, sometimes with the phrase “Adelaide’s Got Balls”. The sculpture is a popular meeting spot in the Mall. It has been the focal point of several events, from flash mob dances to protests.

There was some controversy in January 2013 when it was suggested the sculpture be moved as part of the Rundle Mall upgrade. The artist himself said “If I can stop it I will because like many people, I'm used to it there. It becomes a landmark … People become used to saying ‘I’ll meet you at the balls’. This is part of the history of the city.”

Fortunately, the Malls Balls were not moved and are still the meeting place for many Adelaide shoppers.