The steaming pool at the Glenwood Hot Springs in Colorado is the world's largest hot springs pool – that means plenty of space to relax surrounding by the Colorado Rockies. The natural spring feeding the pool delivers 3.5 million gallons per day, and the water contains 15 different minerals.
Iceland's most famous attraction, the Blue Lagoon, consists of a giant pool of milky blue geothermal seawater pulled from deep beneath the earth's surface. If that's not relaxing enough for you, there's also a steam bath carved out of a lava cave, a sauna and a waterfall to stand beneath for an impromptu massage.
Spend some time in Budapest, and you'll understand why it's called the City of Spas, particularly after you visit the Szechenyi Baths. The Szechenyi Bath is the largest in Europe and one of the most iconic, with its aqua blue waters and neo-baroque yellow facade. Locals and tourist alike come to relax in the pools, and it's common to see older men playing games of chess in the larger outdoor pools.
In a country like Japan – a place known for its numerous hot springs – it takes something special for one to stand out from the next. When you bathe in the natural spring waters of Hell's Valley, you might have company ... but not the human variety. Each winter, hordes of Japanese Macaques come to warm up in the thermal waters.
Banff is absolutely charming in winter, and if the chill of the Canadian Rockies gets to be too much, you can always warm up in the Banff Upper Hot Springs. The natural springs, discovered in 1884, supply water to the modern facilities, where visitors can soak in sulfate-rich waters kept between 98 and 104 Fahrenheit year round.
The calcite-rich waters of Pamukkale in Turkey have gradually created a series of natural terraced hot springs, earning the nickname "Palace of Cotton" for its white and blue coloration. Set on a hilltop overlooking the town of Pamukkale, the hot springs have been used for therapy and relaxation since the second century BC.
When you relax in the warm waters of the Arenal hot springs in Costa Rica, you'll do so under the shadow of the very volcano heating the geothermal waters. The natural springs feed into several resorts, with everything from wide swimming pools to waterfall-dotted lagoons.
About an hour south of Siena, you'll find the terraced hot springs of Saturnia, set amid olive groves and vineyards in Southern Tuscany. According to legend, the springs were created when an angry Saturn thrust a lightning bolt to earth, releasing hot, sulfuric water. Whatever the cause, the series of white, rocky pools are perfect for soothing away all your pains.
On New Zealand's aptly named Hot Water Beach, located on the North Island near Aukland, you can dig your own thermal pool from the sand. If you forget your shovel, many of the cafes in the area will rent one to you so you can check this uniquely Kiwi experience off your bucket list.
Located 60 miles outside of Fairbanks, the Chena Hot Springs are one of Alaska's only year round thermal pools and one of the few places in the world where you can unwind in geothermic waters while gazing up at the Aurora Borealis during the winter.