Offline Interactive Mapping

I am looking for a good interactive mapping software/suite that will allow me to display polygons over a topography map, and be able to display HTML when a polygon is clicked, for more information. I have looked into Google Maps, but the problem is that this map will be in a static location, without internet.

Goal: Find a way to make interactive maps offline Researched: Google Offline caching,, but from what i understand, it will not be able to cache an entire country with polygons, and HTML files. I have found GMapCatcher,can anyone verify it caches very well, and in full detail?

Other than that, any suggestions are welcome.

Thsi map will be an interactive map for a WW2 exhibit, which will consist of polygons( describing battles and positions), and when clicked on, they are to display some information about the object.