I did two walks last week, one with a new group, also through U3A, who only walk once a month.  That walk was from Rose Bay to Watsons Bay along the Hermitage Foreshore going out to Vaucluse Point
and back to the pub for lunch at Watsons Bay.  That is Strickland House which is only open once a year by the Heritage Trust and the view from the back verandah is great.  The other walk was a bit longer and in all bushland out west in Baulkham Hills.  The winter weather was perfect for both days.