In Tasmania, you can still see at least one semaphore station on Mt Nelson, which is above several suburbs on the south of the city of Hobart. I believe there was a semaphore route from the capital to Port Arthur (convict prison) and possibly other routes over the state too.

https://www.utas.edu.au/library/companion_to_tasmanian_histo...

Sadly the semaphore pole itself is gone. The building is still there and was used until 1969.