7. Do: Solage Spa
As spa treatments go, the @solagecalistoga's signature mudslide experience is definitely near the top of my list. After choosing essential oils to be mixed with your personal supply of mud, you're guided through a series of activities (steaming, bathing, resting) that all aid in relaxation and detoxification. Be sure to plan some time before or after your treatment to take advantage of the property's stunning facilities and pools. 

Also noted:
For a similar, yet much more low-key, mud treatment, check out the storied @indianspringsresortspa, which is just around the corner from Solage in Calistoga. The spa was built in 1861, and has a huge pool that's fed by natural hot springs. Also, take a peek at the newly opened Sam's Social Club restaurant, which is part of the Indian Springs complex.