Most of the code done already!
The FlickrFetcher classes I believe need to be fixed to have the app show the right photos, so that's what needs to be done
Create an application that presents a list of popular Flickr photo spots and then allow the user to see some photos taken in those spots.
Create a tab-based user-interface with two tabs: Top Places and Recents. The first tab will allow the user to view which places on Earth have been the most popular for taking photos posted to Flickr and then look at some photos from those places. The second tab will let the user go back and see his or her most recently-viewed (inside your application) photos.