I need large reusable pictures of particular places (to make Wikivoyage banners, example).
Where to find such images? For instance pictures of Berlin with width>2100px
Contiguous images, not mosaics.
An idea could be to use Wikicommons categories, but I could not find a way to filter these by image width (it seems that people with SSH access can get it via an SQL request, so the information is available somehow).