A display apparatus including a communication line connected to a network, an information acquisition device for acquiring in real time at least information relating to a predetermined site on the network via the communication line, the communication line being held by a communication line holding device. The display apparatus includes a display control device for displaying in real time information relating to a plurality of sites acquired by the information acquisition device, and forming symbols corresponding to the plurality of sites, displaying the symbols three-dimensionally in a contrastable state from each other. The information acquired by the information acquisition device is displayed will a symbol, which corresponds to the site, and the information acquisition device acquires at least one of or a plurality of pieces of information indicating congestion status, update status, response, type, popularity, cost, and links of each site, and congestion status of the network.