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 dayNG5139 : East side of Beinn Tianabhaig by John Allan
The steep eastern slope of the hill drops to the water of the Sound of Raasay, with Raasay itself on the far side.
Today's Photo of the dayUMV5963 : Speyerbachmündung bei Speyer by Klaus Graßmück
Denkmal "Die Welle" an der Mündung des Speyerbachs in den Rhein
Geograph Britain and Ireland, also has a slightly simplified site schools.geograph.org.uk intended for use within Schools.