To mark this construction milestone, a tree was brought up to level 40 with a crane and placed at the highest point as part of a time-honoured tradition.

Realm Adelaide is the most successful development of its kind in Adelaide – with 95% of the building already sold.

The northern penthouse holds the record for the most expensive apartment ever sold off the plan ($5.2 million). The southern penthouse has been released for sale today.

The residential-only tower rises above Adelaide at 132 metres high, creating 1550 individual local jobs during construction.

The luxury residential development is almost complete and residents will be able to move in April 2020.