Urban sketchers is a group of people from all over the world who sketch their local areas and post them online at Urban Sketchers.
This is a little different from plein air painters but in the same vein. Sometimes they get together at various locales, but their different styles are inspiring. It is also great fun to view the different parts of the world that they sketch. Many of the paintings are pretty complete while others are really just “sketches.” Check them out!