A drive assist system that displays, on a display section, an image in which a destination location icon that indicates a destination location is superimposed on a scene in front of a mobile body, comprising: frontage length acquisition means for acquiring a length of a frontage of the destination location along a road on which the mobile body is present; maximum error acquisition means for acquiring a maximum error which is a maximum value of an error between the estimated position and an actual position of the mobile body that may be caused in a direction of the road on which the mobile body is present; display position specifying means for specifying a display position of the destination location icon on the basis of an estimated position of the mobile body such that the display position of the destination location icon is a position within the frontage; and image display means for displaying, on the display section, an image in which the destination location icon is superimposed on the display position of the destination location icon in the scene in front of the mobile body, wherein the display position specifying means specifies the display position of the destination location icon on the basis of the estimated position of the mobile body such that the destination location icon is displayed within the frontage of the destination location in the case where the error is zero, and the destination location icon is displayed within the frontage of the destination location or at a position nearer to the mobile body than the frontage of the destination location in the case where the error is the maximum error, the display position specifying means determines a position which is the maximum error on a near side from an end point of the frontage on a far side in the direction of the road on which the mobile body is present as the display position of the destination location icon in the case where half the length of the frontage is less than the maximum error, and the display position specifying means determines a position which is the maximum error on a far side from an end point of the frontage on a near side in the direction of the road on which the mobile body is present as the display position of the destination location icon in the case where half the length of the frontage is equal to or more than the maximum error. frontage length acquisition means for acquiring a length of a frontage of the destination location along a road on which the mobile body is present; maximum error acquisition means for acquiring a maximum error which is a maximum value of an error between the estimated position and an actual position of the mobile body that may be caused in a direction of the road on which the mobile body is present; display position specifying means for specifying a display position of the destination location icon on the basis of an estimated position of the mobile body such that the display position of the destination location icon is a position within the frontage; and image display means for displaying, on the display section, an image in which the destination location icon is superimposed on the display position of the destination location icon in the scene in front of the mobile body, wherein the display position specifying means specifies the display position of the destination location icon on the basis of the estimated position of the mobile body such that the destination location icon is displayed within the frontage of the destination location in the case where the error is zero, and the destination location icon is displayed within the frontage of the destination location or at a position nearer to the mobile body than the frontage of the destination location in the case where the error is the maximum error, the display position specifying means determines a position which is the maximum error on a near side from an end point of the frontage on a far side in the direction of the road on which the mobile body is present as the display position of the destination location icon in the case where half the length of the frontage is less than the maximum error, and the display position specifying means determines a position which is the maximum error on a far side from an end point of the frontage on a near side in the direction of the road on which the mobile body is present as the display position of the destination location icon in the case where half the length of the frontage is equal to or more than the maximum error.