Geograph is a concept and open source code for a online website to create a comprehensive collection of photographs capturing every part of given region.
Currently there are three active projects, shown below - including a photograph from each.
Today's Photo of the dayNH5667 : Glen Glass by Dave Fergusson
Ben Wyvis in the distance.
Today's Photo of the dayULB1624 : Lichtdurchfluteter Wald by H Bongard
Die Sonne durchflutet den Fichtenwald
Geograph Britain and Ireland, also has a slightly simplified site schools.geograph.org.uk intended for use within Schools.