1. A Supervised Approach for Road Detection Using Invariant Color Features:
After receiving few requests on sharing source codes of the article below, I went through an extensive search in my old hard-disks. Finally, a demo is available on the Matlab community page. As I have also indicated in the comments of the source code, you might need to work on adjusting the default threshold values for your own applications.
2. Yearly Rainfall: This video shows how to visualize and download yearly rainfall data for the Netherlands.
3. Administrative Boundaries: This page provides administrative boundaries of each country as a shapefile.
3. Interactive Maps of Amsterdam:
This page provides free maps of the city Amsterdam that you can download as shapefiles.