1. A vehicle surroundings monitoring system comprising: a plurality of cameras, including at least a first and a second camera, for capturing images of surroundings of a vehicle; and an image processing portion that receives, as input, images captured by the plurality of cameras, synthesizes partial images obtained from these camera images, and displays a synthesized image on a display device; wherein in the synthesized image, a first partial image according to the first camera and a second partial image according to the second camera are arranged adjacent to one another; and the first and the second cameras are installed so that their capturing directions substantially match a direction of a border between the first partial image and the second partial image near the border.