I was aware and visited the warming hut at Teacup near Mt Hood on several occasions, but little did I know that the Willamette National Forest has winter shelters maintained by volunteers for use by winter sports enthusiasts. Some of the shelters even permit overnight stays; some are warming shelters only. There are also three winter cabin rentals available by advance reservation. How cool is that?
List of shelters with information, recent condition, and trail links.