Hi Marion!
This building in the picture is Cadman's Cottage, what is a very old one, it's built from 1815 to 1816.
This house gave home the N.S.W. government, for the coxswain and for the crew. But now we can fund here the National Parks and Wildlife Service Information Centre, where we can locate informations aboute national parks near Sydney. It is open in daily time, and has at 110. George St. Entrance.