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 dayNS3779 : Ancient hill-fort on Carman Hill by Lairich Rig
This is one of several groups of boulders lying within the remains of an ancient hill-fort at this site. This south-facing location near the summit of the hill commands an excellent view over much of the valley of the River Leven, as well as to the River ...
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.