Travel doesn't have to be expensive with promotions from KOA Campgrounds. They offer Mother's Day, Father's Day and loyalty cardholder offers for free or discounted night stays. Some campgrounds have cabins, tee pees, tree houses and Airstream rentals.

The National Park Service offers a number of free admission days. Why not see America's treasures, and let Uncle Sam pick up the tab? There are five days in 2020 when you can do just that.