World Cities dataset consists of 2,226,414 geo-tagged images from 40 cities, crawled from Flickr using geographic queries covering a window of each city center. It is designed to be used as a distractor set along with any annotated test set. We also provide an appropriate test set.

The Flickr Logos 27 dataset is an annotated logo dataset downloaded from Flickr and contains more than four thousand classes in total.

European Cities dataset consists of 909,940 geo-tagged images from 22 European cities, crawled from Flickr using geographic queries covering a window of each city center. A subset of 1,081 images from Barcelona is annotated into 35 groups of images depicting the same scene. 17 of them are landmark scenes and 18 are non-landmark scenes. The remaining 908,859 images from the other 21 cities are the distractors.

European Cities dataset consists of 50,767 geo-tagged images from 14 European cities, crawled from Flickr using geographic queries covering a window of each city center. A subset of 778 images from 9 cities are annotated into 20 groups of images depicting the same scene, building or landmark. The remaining 49,989 images from the other 5 cities are the distractors.