you can go to clifton hill it's almost everything there.
It's an open place and all times are wonderful depending on which means of transport you using
It's a public place. There are no open hours
Anytime if you are driving...just walk down and check the falls out. After 1am it's barely anyone there but still cool to see the falls. If you are staying by the hotels close to the falls then it will make your life and walk super easy to the falls.
12am i would say,last train and bus
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