Estes Park CO
(Created 2009)
For this project I was able to use GIS data from the City (as well as Larimer County). I think the shaded relief layer adds a lot to this map in particular:

The data included detailed parkland polygons, and even building footprints:

I also made extensive use of aerial imagery in order to add things such as golf course layouts.
US highway endpoints, photos, maps, and history