Visitors soak in the warm waters of Strawberry Park Hot Springs, just outside of Steamboat Springs, Colo., in December 2022. Wellness travel is booming, projected to account for $1 trillion worldwide this year, according to the research nonprofit Global Wellness Institute. (Andrew Miller/The New York Times) By ELAINE GLUSAC In Iceland, I paid $11 for access to the outdoor recreation complex in Akureyri, the country’s second-largest city, to swim laps and wind down in geothermal pools with…
