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 dayTQ5383 : Hedgerow, Hornchurch Country Park by Robin Webster
May blossom in late April.
Today's Photo of the dayUUT1349 : Waldersee - Kuhbrücke by Schöne-Phila
Das Foto zeigt die Kuhbrücke über den Kapengraben im Dessau-Roßlauer Ortsteil Waldersee.
Random photo (doesn't have a daily photo)WV4775 : Leaving the Maseline Harbour, Sark by John Rostron
Taken from the boat heading for Herm, this shows the Maseline harbour at the extreme left of the promontory. The tunnel from the harbour is also just visible. The small islets to the left are the Burons.
Geograph Britain and Ireland, also has a slightly simplified site schools.geograph.org.uk intended for use within Schools.