Editing Sydney (section)

===Hills district===
The [[Hills District, New South Wales|Hills district]] generally refers to the suburbs in north-western Sydney including the local government areas of [[The Hills Shire]], parts of the [[City of Parramatta Council]] and [[Hornsby Shire]]. Actual suburbs and localities that are considered to be in the Hills District can be somewhat amorphous. For example, the Hills District Historical Society restricts its definition to the Hills Shire local government area, yet its study area extends from Parramatta to the Hawkesbury. The region is so named for its characteristically comparatively hilly topography as the Cumberland Plain lifts up, joining the Hornsby Plateau. [[Windsor Road|Windsor]] and [[Old Windsor Road]]s are the second and third roads, respectively, laid in Australia.<ref>{{Cite web|url=http://www.ozroads.com.au/NSW/RouteNumbering/State%20Routes/40/oldwindsor%26windsorroad.htm|title=Ozroads: Old Windsor Road & Windsor Road|website=Ozroads.com.au|access-date=2 July 2022|archive-date=26 April 2018|archive-url=https://web.archive.org/web/20180426001422/https://www.ozroads.com.au/NSW/RouteNumbering/State%20Routes/40/oldwindsor%26windsorroad.htm|url-status=live}}</ref>

On 26 May 2019, The [[Sydney Metro Northwest]], which went from Chatswood to Tallawong, opened, with a large portion running through the Hills District, which meant the Hills District, for the first time, started having heavy rail.<ref>{{Cite web|last=|first=|date=2019-01-14|title=Major Milestone As Metro Northwest Completes Its First Full Test|url=https://www.transport.nsw.gov.au/node/9580|access-date=2021-02-09|website=Transport for NSW|language=en-AU}}</ref>
Before this, The Hills was served by [[Bus Rapid Transit]].