Castlecrag

is a suburb of historical significance in Middle Harbour on the North Shore of Sydney, Australia, originally planned by architect Walter Burley Griffin. Griffin came to Castlecrag in 1925 after tiring of the politics surrounding implementation of his designs for Australia's capital city, Canberra. It is bounded to the north, east and south by Middle Harbour and to the west by the heavily congested Eastern Valley Way[1]. Early homes in Castlecrag were built using natural stone. They better fit into the environment, this was common practice in architecture of the Arts and Crafts movement[citation needed]. Later homes were built with bricks using Griffin's patented Knitlock system[citation needed].