An image collection system includes an image obtainment unit configured to obtain an image of a landmark object captured by an imaging unit installed on a vehicle; a positional relationship information obtainment unit configured to obtain positional relationship information representing a positional relationship between the landmark object and the vehicle when the image was captured; and a save processing unit configured to associate the image obtained by the image obtainment unit with the positional relationship information obtained by the positional relationship information obtainment unit, so as to save the associated image on a database.