Sydney's birthplace, The Rocks
Meet at the Harbourview Hotel. Just remember that the Rocks Markets are on so the end of George Street will be closed. You can there through Kent street, Hickson Rd or Essex Street (off George street)
Ku-Ring-Gai National Park
Stretch of the legs and some fresh air
Collaroy Surf Rock Hotel
Grab a beer, a bite and decide which way home you want to go