What is the parliamentary triangle in Canberra?

In the urban design of Canberra, the parliamentary triangle is a central feature defined by major roads that create lines of sight between prominent landmarks. Originally conceived by the architect Walter Burley Griffin, the triangle serves as the focal point of the city's design and houses the largest concentrations of federal government offices and the Parliament.12

The triangle is integral to the city's land axis, which stretches from Mount Ainslie in the north to Parliament House on Capital Hill in the south. While the broader Griffin plan included other designated areas—such as the Civic Centre for local government and a market centre—the parliamentary triangle remains the primary administrative heart of the nation's capital.21