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 daySD8600 : Central Park Metrolink Station by David Dixon
Part of the recently (June 2012) opened Metrolink “phase 3A” expansion to Oldham, Central Park Station is certainly the most impressive tram stop on the network to date, featuring a striking curved copper and glass canopy suspended by a ...
Today's Photo of the dayUMV5581 : Ludwigshafen: Historische Straßenbahn auf einer Sonderfahrt by Harald Sogl
Random photo (doesn't have a daily photo)WA6008 : Butts at the Eastern end of Longis Bay by John Rostron
In the Trail Guide, this is described as a 'Targets Wall' or 'Rifle Butts' and was constructed in 1860. It was used for rifle practice. The white building at the left on the horizon is Essex Castle.
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.