Page "Lake Burley Griffin" Paragraph 11

The straight edge of the circular segment that formed the central basin was designated the water axis, and it extended northwest towards Black Mountain, the highest point in Canberra.

A line parallel to the water axis, on the northern side of the city, was designated the municipal axis.

The municipal axis became the location of Constitution Avenue, which linked City Hill in Civic Centre and Market Centre.

Commonwealth Avenue and Kings Avenue were to run from the southern side from Capital Hill to City Hill and Market Centre on the north respectively, and they formed the western and eastern edges of the central basin.

The area enclosed by the three avenues was known as the Parliamentary Triangle, and was to form the centrepiece of Griffin's work.