An object of this invention is to simplify an operation of reproducing, on a single window, pieces of image information of different image capturing apparatuses or pieces of image information captured at different times. A display apparatus manages a camera apparatus (1) serving as the image capturing source of image information to be reproduced in each image region in association with a plurality of image regions on a single window. The display apparatus manages whether the image information to be reproduced in each image region is recorded image information or image information which is currently being captured. On the basis of the pieces of management information, the display apparatus acquires image information from a desired one of camera apparatuses and recording apparatuses and reproduces the pieces of acquired image information on the plurality of image regions.