Alan is a 91-year-old resident of Sydney, Australia who is on a mission to walk every single street of Sydney and its sprawling suburbs. His walks are methodically documented with snaps of him standing bent and grinning before landmarks on each road. He is a latter-day Phyllis Pearsall — the woman who walked 3,000 miles of London streets in compiling the now indispensable A-Z Street Atlas of London.
(Thanks, Louise!)
Update: Caleb Smith has done this in Manhattan, too. (Thanks, Bruno!). Also, Francine Corcoran, a 91-year-old Minneapolis resident walked every street there. (Thanks, Sarah!)