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 dayNB5446 : TrÃ igh Ghioradail, Isle of Lewis by Claire Pegrum
Looking towards Gob Girdabirie.
Today's Photo of the dayUNE1985 : Hochbrücke Hochdonn (High Bridge over the Kiel Canal at Hochdonn) by M J Richardson
Looking north from a ship transiting the canal. Beyond is the ferry across the canal at Hochdonn.
Geograph Britain and Ireland, also has a slightly simplified site schools.geograph.org.uk intended for use within Schools.