There was a photo contest with the subject of Budapest back in January. Some 1600 photos were submitted in three categories: "Modern Budapest", "Dark Budapest" and "Funny Budapest". All the photographs are available here.

The Budapest Public Library opened its redesigned website 2 weeks ago. One of the new features would be the Picture Archives of Budapest. Unfortunately, their database server doesn't seem to work, or at least, doesn't accept connections from outside - hope they will be able to fix it. The picture archives is linked here.