Jerry Lerma and Terry Hogan must really love The Simpsons. I mean *really* love it, to create this highly detailed Map of Springfield, hometown of The Simpsons:
The mapping of Springfield began in the Spring of 2001 when we realized that no adequate map of Springfield existed either online or in print. Initially the content was collected from the City Profile and Springfield Vacation pages at The Simpsons Archive, but it has since been expanded by numerous viewings of most episodes of The Simpsons.
While the placement of most locations is arbitrary, many are placed according to where they appear in relationship to each other in specific episodes of The Simpsons. In some cases 'one-time references' to specific locations have been disregarded in favor of others more often repeated. Due to the many inconsistencies among episodes, the map will never be completely accurate.
http://www.mapofspringfield.com/ - Thanks Gavin Baxter!