8 geothermal wonders worth planning a trip around

You always remember your first time—swimsuit on, lowering into billows of steam. My inaugural hot springs dip was decades ago, on the side of Costa Rica’s Arenal volcano, and the starlit soak still feels just as visceral now as it did then. Sure, these geothermal wonders are not a complete novelty since there are so many around the globe, but they somehow always feel a bit rare.