Psychogeographic Mapping

Defined in 1955 by Guy Debord, founder of the Situationist International, "psychogeography is an approach to geography that emphasizes playfulness and drifting around urban environments." 

http://en.wikipedia.org/wiki/Psychogeography

Psychogeographic map of San Francisco's Marina Disctrict

Psychogeographic map of San Francisco's Marina Disctrict