Crater Lake National Park - No place else on earth combines a deep, pure lake, so blue in color; sheer surrounding cliffs, almost two thousand feet high; two picturesque islands; and a violent volcanic past
Duffy Lake is fairly easy to hike with a dramatic turquoise lake surrounded by craggy mountain peaks at the top. Nice campgrounds at the trailhead with small campground at summit for packers. For those with horses, riding is allowed here. At times the trail can get congested it's best to stop and let the hikers walk by. Also you will find trekkers with Llama's packing in camping gear, if your horse is the nervous sort the trails can get narrow at times. Hopefully it won't be in those areas if you run into them.
Breitenbush Hot Springs Retreat and Conference Center has hot springs, small cabins and tent areas.
Marion Lakes is one of the more beautiful campgrounds with views from the lake of Three Fingered Jack a unique rock formation.
Great for horseback riding. You have wonderful views of mountains and lakes. There are a few trails you can choose from. Only difficulty is at beginning of ride with small narrow trail through large rocks. If worried about feet and legs on your horse I would suggest to get off and lead them through this spot. It's about 75 feet long.