Castlecrag, New South Wales

Castlecrag Sydney, New South Wales
Middle Harbour, view from Castlecrag
Population	2,957 (2011 census)
• Density	1,772.5/km2 (4,591/sq mi)
Established	1860s
Postcode(s)	2068
Area	1.5 km2 (0.6 sq mi)
Location	8 km (5 mi) north of Sydney CBD
LGA(s)	City of Willoughby
State electorate(s)	Willoughby
Federal Division(s)	North Sydney
Suburbs around Castlecrag: North Willoughby Middle Cove Castle Cove Willoughby East Castlecrag Seaforth Willoughby Northbridge Beauty Point

Castlecraig is a suburb on the lower North Shore of Sydney, in the state of New South Wales, Australia 8 kilometres north of the Sydney central business district, in the local government area of the City of Willoughby.

Castlecrag is a suburb of historical significance that is bounded to the north, east and south by Middle Harbour and to the west by the heavily congested Eastern Valley Way. Castlecrag shares its postcode, 2068, with the surrounding suburbs of Willoughby, Middle Cove and North Willoughby.

Castlecrag was originally planned by the husband and wife team, Walter Burley Griffin and Marion Mahony Griffin who named the suburb after a towering crag of rock overlooking Middle Harbour, known locally as Edinburgh Castle. The Griffins came to Castlecrag in 1925 after tiring of the politics surrounding implementation of their designs for Australia's capital city, Canberra.

Many early homes in Castlecrag were built using natural stone to blend into the environment, a common practice in architecture of the Arts and Crafts Movement, which was concerned with creating "the human touch" as distinct from mass production. Other homes of this period were built with bricks using Walter Burley Griffin's patented Knitlock system. Historically, Castlecrag was noted in the early 20th century as an experiment in communal and community planning and living, and for the liberal intellectual, Theosophical, Anthroposophical and Natural history views of its inhabitants.