1. An image accumulation device comprising: an input unit that inputs, as input images, images of specific shot locations; an image database in which specific locations in a predetermined region, shot images relating to the specific locations, position information of shot locations of the shot images and shooting time information of the shot images are associated and stored; and an identification unit that identifies, on the basis of the input images and the image database, at least one of specific locations corresponding to the shot locations of the input images and shooting times of the input images.