Information display device

An information display device comprising:

• photographed image acquisition means for acquiring a photographed image;
• map information storage means for storing map information;
• image display means for displaying the photographed image and a map image generated based on the map information;
• input means for designating, based on an operation performed by a user, at least one structure displayed in either the photographed image or the map image;
• and
• structure correspondence acquisition means for acquiring a correspondence between the at least one structure displayed in the photographed image and at least one structure displayed in the map image, or acquiring a correspondence between the at least one structure displayed in the map image and at least one structure displayed in the photographed image, wherein
• the image display means highlights, when the at least one structure displayed in the photographed image is designated, the at least one structure, among structures displayed in the map image, corresponding to the at least one structure having been designated, or highlights, when the at least one structure displayed in the map image is designated, the at least one structure, among structures displayed in the photographed image, corresponding to the at least one structure having been designated.