It is the ambitious public artwork preordained as the next great symbol of Sydney, and deserving a place alongside the Harbour Bridge and Opera House as city landmarks.

After some delay, a redesign, and a significant cost blowout, a remodelled Cloud Arch has been unveiled.

The new sculpture is wider, heavier – and more than three times as expensive as the original.

It will cost $11.3 million, up from the original price tag of $3.5 million.