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 dayTM5592 : Alert comes into Lowestoft Harbour by Roger Jones
Trinity House Vessel "Alert" comes into Lowestoft. ...
Today's Photo of the dayULB5494 : Rhine-Ruhr Metropolitan Region : Aerial View by Lewis Clarke
The Ruhrtalbrucke over the River Ruhr can be seen here.
Random photo (doesn't have a daily photo)WV2975 : Aurigny flight arrival from Manchester at Guernsey Airport by Colin Park
Geograph Britain and Ireland, also has a slightly simplified site schools.geograph.org.uk intended for use within Schools.