While hiking up the Don Valley one August afternoon, I spoke to a man and his son who had cycled from their home in the Jane-Finch corridor, down the Humber Valley, along the Harbourfront, and were on their way back home via the west fork of the Don - they would have cycled for eight hours without leaving parkland.
(Wayne Grady - Introduction, "Toronto Parks")

The intersection of the "irrational" (Toronto's system of ravines and river valleys) and the "rational" (arterial road system) yields many potential connection points and sites for inhabited Living Bridges.