The emergence of these pseudo-public spaces raises fundamental questions about the value of a public domain that is by the public, for the public.
These unsanctioned footpaths defy design, but is that necessarily a bad thing?
Wider footpaths, separated cycleways and pedestrian-friendly streets could become the norm, says a UNSW Built Environment expert.
In many countries, city-shaping mega-projects are generally overseen by local government, but in Australia state governments often step in and exclude council and community representatives from the process.
Students Larissa Tse and Trystan Graham talk to their lecturer for World Landscape Architecture Month.