Rosebud Canyon in Montana. Discovered it by accident. Very small. Quite possibly the most beautiful place I have ever been. Unspoiled views, gorgeous water, just a few, very friendly people, and all the wildlife you could want. It is so very breathtaking. It is part of the headwaters of the Yellowstone River, and is just a ways off the Beartooth Pass that goes from Montana into Wyoming and ultimately to Yellowstone. There are excellent trails for hiking, great trout fishing, Places to just chill. Imagine sitting for an afternoon reading, taking in the view, sipping some whiskey. I have done this.
Not my picture, but I have pictures just like this.