City advertising by advertising on web sites with extensive content related to particular cities. Such web sites can connect large city audiences with products/services for sale in those cities. Surfers searching for information about particular cities find adverts at such web sites as a result of city name related searches rather than product/service keyword searches. In this way businesses, e.g. shops, restaurants, can advertise and reach out to consumers located in the real-world localities of their product/service offerings.
Another method that you may consider is following Google’s Webmaster guidelines for country segmentations and either using subdomains or subfolders for specific countries and languages. This assumes that you have a generic TLD (.com, .org, etc). For example, es.example.com or www.example.com/es/ for Spain/Spanish. This might be the better local SEO solution because it also means that the subdomains or subfolders you specify will be shown in local searches on Google, based on TLD. The downside is that it requires a fair amount of work to setup, and might not coincide with your branding efforts internationally. An important note about this method is that it does not solve the problem of language, but only the country location. So if your service or product is available internationally, you probably shouldn’t limit the geographic location for which Google serves results. Nonetheless, this approach serves as a good platform to initiate conversion optimization on those segmented pages or sites.