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 daySN1405 : Coast Path tunnel near Coppet Hall, Saundersfoot by Dylan Moore
Saundersfoot Harbour and its associated tramways were constructed in 1830 in order to ship anthracite from the inland parts of the Pembrokeshire coalfield. The local collieries ceased operation in the 1920s. The tramway from Kilgetty colliery ran down to ...
Today's Photo of the dayUMV2947 : Feldkreuz in den Weinbergen by Klaus Graßmück
Random photo (doesn't have a daily photo)WV4674 : Dixcart Bay and Hogsback Headland by Colin Smith
"Dixcart Bay - best near low tide when the sand is exposed, also the most easily accessible on the island. For shelter, try this one if the wind is northerly". www.sark.co.uk https://en.wikipedia.org/wiki/Sark
Geograph Britain and Ireland, also has a slightly simplified site schools.geograph.org.uk intended for use within Schools.
... and a sub-project just focusing on images in Ireland, www.geograph.ie.
Geograph Germany/Deutschland, also has a German/Deutsch language version at geo.hlipp.de.