Dubbed the world’s only drive through volcano, Soufriere in St Lucia offers the chance to take a bath in thick, oozing, mineral-rich mud.
Connected by a series of wooden walkways, the pools were believed by the Incas to have the ability to cure rheumatism and arthritis.
You can't bathe here, but a walk through this volcanic wonderland takes in vast craters and dazzlingly colorful hot pools, ranging from vivid yellow to startling turquoise.
You can reach both Puritama and El Tatio from San Pedro, in northern Chile, which is just under two hours from the airport in Calama.
The warm, mineral-rich waters generated by Costa Rica’s Arenal Volcano draw thousands of tourists to the surrounding area each year.
It's an eight-mile hike to Conundrum Hot Springs, but the stunning mountain meadows and aspen forests make the hard work worthwhile.
These free, spring-fed thermal pools in Elsey National Park are fringed with tropical woodlands and cabbage palms.
Italians have floated in these naturally carved pools since Roman times in the firm belief that the thermal waters have healing properties.