Image display apparatus, image display method, and information storage medium

Provided is an image display apparatus capable of allowing a user to easily recognize an image belonging to a group. A library view image classifying unit classifies a plurality of images into groups which have a rank order associated therewith. A library view group image layout unit places a group image corresponding to each of the groups according to the rank order of the groups, along a group image layout reference line provided in a display region. A library view representative image layout unit places, on a representative image layout region in the display region, an image belonging to any one of the groups falling within a range on the group image layout reference line associated with the representative image layout region, as a representative image. A library view space displaying unit displays at least part of the display region on a screen.