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 dayTQ1972 : View across Pond Slade after rain by Stefan Czapski
The spring and early summer of 2015 were largely dry, but then a number of wet spells followed in July and August. After rain for much of the 24th and 25th of August, conditions brightened on the afternoon of the 26th - when this shot was taken. ...
Today's Photo of the dayULB8051 : Lindlar Ebbinghausen - Blick nach Oberbergscheid by gps-for-five
Geograph Britain and Ireland, also has a slightly simplified site schools.geograph.org.uk intended for use within Schools.