Not far from the shores of the North Fork of the Snake River my grandparents have a small, rustic (emphasis on rustic) cabin. This is a "family" cabin and as I've grown up I've been permitted to visit there from time to time and enjoy the beauty of the mountains, the smell of pine trees, and an awful lot of mosquitos.
We've taken our own children to this retreat before. Frankly, they didn't grow an instant love for the little cottage in the trees. But they are a generation raised on spacious bathrooms, microwave dinners, and Wii playsystems. The idle pastimes available at Mack's Inn in the early nineteen hundreds -- and still the main attractions -- have a hard time getting their attention. This is why it is an ideal spot for family outings and family reunions. There is really nothing better to do than turning off your smart phone, staring at your family, and saying, "Now what?"
Don't get me wrong, this Nature-land is about 20 minutes south of West Yellowstone and the west entrance to Yellowstone National Park. Gorgeous. You should go. And if you want to rent a teeny, tiny crash pad, and you are neurotically clean, my family might offer you a great rate. (But don't hold your breath.) And if you get all excited and decide to visit, remember your mosquito repellent, citronella candles, and long pants or you might just get carried away.
PS -- There's a remarkably sturdy swing set. Built because you can't tell grandkids you are going to Island Park and then not have swings.
PHOTO NOTE: These pictures are a mix of my kids, my husband, one of my brothers, and his wife and daughter.