// http://localhost/endurancegoals/cities/of/spain
public ActionResult of([Bind(Prefix = "id")] string countryName)
{
Countries goals = new Countries(SessionProvider.OpenSession());
var cityList = goals.GetByName(countryName).Cities;
var jsonGoals = GetCityList(cityList);
return Json(jsonGoals, JsonRequestBehavior.AllowGet);
}