Terwilliger Hot Springs -
Terwilliger Hot Springs (AKA Cougar Hot Springs) is one of those places that you hate to tell others about. You like it so much that you want to keep it a secret from the rest of the world. Simply put, this is a magical spot hidden within this super-natural forest. (I say supernatural not because it is un-natural, but it is the pinnacle of what we would imagine a pristine forest to be. It is that lush forest that we might see on an exotic movie set.
As you walk the 1/4 mile trail to the hot springs, you are enveloped in the dark hues of primeval woodland, touched by mottled light filtering down from treetops high above and the invigorating scene of the lagoon with the gorgeous Rider Creek waterfall spilling into it. There are six soaking pools spaced apart by rock walls laid out in steps down a ravine. The water comes out of a spectacular rock formation. This site has been improved throughout the years by the Forest Service, many volunteers, and the users of the area. Clothing is optional at the hot springs.
Read more at Travel Oregon