One of the services offered by Virtual Dispatch is their Scenery Database. Each spot on the world map is a FSX (or Prepar3d) airport existing as an addon and reported as such in their database. Although it seems to be the most complete found on the web, it may not be exhaustive of all airports, and of all authors of one airport either. Anyway, if you wish to find new destinations but with a more realistic environment than the default terminal buildings, here’s a new bookmark you have to save.
Virtual Dispatch has been known for their online and free flight planning service, including airports infos and weather reports along the track drawn on the map. The navigation data updates are not free though, as they need Navigraph credits.