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 dayTF4720 : South Holland Main Drain by Jonathan Bye
The old sluice (1832) is seen on the right and the new sluice (1937) on the left. Between them looms the Sutton Bridge power station.
Today's Photo of the dayUPV7586 : Schloss Hersbruck by Siegmar Schmidt
Random photo (doesn't have a daily photo)WV4675 : Sark - Golden Post Box by Colin Smith
The only post box on the island was painted gold in August 2012, commemorating Carl Hester's gold medal win (team dressage) at the 2012 London Olympic Games. The box is on The Avenue, outside Sark Post Office. ...
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.