Traverse Me [gpsdrawing.com] is a complete map of the campus of the University of Warwick, drawn on foot at scale 1:1. It required over 238 miles of GPS tracks which were walked over 17 days.
The author, Jeremy Wood, responded to the structure of each location by avoiding walking along roads and paths whenever possible. The route was recorded with GPS technology and was traversed in different stages over the 300 hectare site. Security was called on him twice on separate occasions and he lost count of how many times he happened to trigger an automatic sliding door.
See also:
. Biggest Drawing in the World
. Locative Disposition
. GPS Diary
. GPS Drawing (back in 2005)
Via @jwoodx.