Often, a big advantage of being out in the country at night is how dark it is. Stargazing opportunities abound!
In our search results, we have some members who have checked off "astronomy" as an activity, but really, bring a telescope along on any rural vacation and you're likely to be rewarded as long as the skies are clear. (You can even rent telescopes online - just do a web search.) Consider planning a trip around one of the annual meteor showers!