WP Rich Snippets Locations
The Locations add-on enables you to include schema markups for locations and show the area on Google maps; it inserts the map immediately in the web content body. Still, you can additionally display the map anywhere on your website using a unique shortcode. Nonetheless, the shortcode enables you to display all locations on one map, which is suitable for the full-size display.
This is best for web directories and various other testimonials for locations (for instance, organizations and restaurants).