Castlecrag is a suburb on the lower North Shore of Sydney located 8 kilometres north of the Sydney CBD.

Castlecrag, like Canberra, was originally planned by Walter Burley Griffin, who named the suburb after a towering crag of rock overlooking Middle Harbour. This crag was known as Edinburgh Castle. Griffin accepted the Castlecrag project in 1925 after feeling he had had enough of Canberra politics.

Early homes in Castlecrag were built using natural stone. The reason for this was ‘defence’ It was thought that if Castlecrag was ever under attack, the natural stone buildings would remain invisible.  They gave up on this idea eventually, because you can see a lot of homes that do stand out in that beautiful suburb. The suburb was named after a towering crag of rock overlooking Middle Harbour, originally known locally as Edinburgh Castle. This led to naming the streets in the southern older, portion of the suburb after parts of that castle: The barbette, The barbican, The barricade, The bartizan, The bastion, The battlement, The bulwark, The citadel, The high tor, The outpost, The palisade, The parapet, The postern, The rampart, The redoubt, The scarp, The tor walk and Sortie Port. There are also Tower, Casement, and Turrett Reserves, and the main street through the centre is Edinburgh Rd.

In recent times, the residents of the suburb have been noted for taking arms against the Warringah Freeway which was planned to link the Sydney Harbour Bridge with the Northern Beaches. The residents won as today the expressway terminates just south of Castlecrag in Naremburn.

Castlecrag is a suburb on the lower North Shore of Sydney located 8 kilometres north of the Sydney CBD.

Castlecrag, like Canberra, was originally planned by Walter Burley Griffin, who named the suburb after a towering crag of rock overlooking Middle Harbour. This crag was known as Edinburgh Castle. Griffin accepted the Castlecrag project in 1925 after feeling he had had enough of Canberra politics.

Early homes in Castlecrag were built using natural stone. The reason for this was ‘defence’ It was thought that if Castlecrag was ever under attack, the natural stone buildings would remain invisible.  They gave up on this idea eventually, because you can see a lot of homes that do stand out in that beautiful suburb. The suburb was named after a towering crag of rock overlooking Middle Harbour, originally known locally as Edinburgh Castle. This led to naming the streets in the southern older, portion of the suburb after parts of that castle: The barbette, The barbican, The barricade, The bartizan, The bastion, The battlement, The bulwark, The citadel, The high tor, The outpost, The palisade, The parapet, The postern, The rampart, The redoubt, The scarp, The tor walk and Sortie Port. There are also Tower, Casement, and Turrett Reserves, and the main street through the centre is Edinburgh Rd.

In recent times, the residents of the suburb have been noted for taking arms against the Warringah Freeway which was planned to link the Sydney Harbour Bridge with the Northern Beaches. The residents won as today the expressway terminates just south of Castlecrag in Naremburn.