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 daySS4497 : Whitford Point Lighthouse by Martin Edwards
Built in 1865,and remaining in operation until 1937,the structure is thought to be the only remaining sea washed cast-iron lighthouse in the British Isles.
Today's Photo of the dayUPE5944 : Schwerin: Garten des 21. Jahrhunderts by Hubert F
Angelegt zur Buga 2009.
Random photo (doesn't have a daily photo)WV6655 : Vicard, headland on north coast of Jersey by Colin Park
Geograph Britain and Ireland, also has a slightly simplified site schools.geograph.org.uk intended for use within Schools.