The Most Beautiful Hot Springs in North America
6 places in 4 countries · updated 13 October 2026
In short: By our ranking, the most beautiful hot springs in North America are Grand Prismatic Spring (United States), Mammoth Hot Springs (United States) and Fly Geyser (United States). The list covers 6 hot springs in 4 countries. The United States has the most, with 3. Last updated 13 October 2026.
North America's hot springs come from several very different kinds of heat. Beneath Yellowstone lies a volcanic hotspot that powers the largest concentration of geysers and hot springs on Earth; across the Great Basin, stretched and faulted crust lets deep water rise to the surface; the islands of the eastern Caribbean sit on an active volcanic arc; and central Mexico is crossed by a belt of young volcanoes. Each setting leaves its own signature, from mineral terraces to boiling craters and warm rivers in limestone canyons.
Grand Prismatic Spring in Yellowstone's Midway Geyser Basin is the largest hot spring in the United States, its deep blue centre ringed by orange and yellow mats of heat-loving microbes. At Mammoth Hot Springs, on the park's northern edge, water rich in dissolved limestone builds pale travertine terraces that change shape from year to year. Fly Geyser in the Nevada desert is a different case altogether: it grew from a well drilled in the 1960s, and its mineral cones, coloured by algae, keep rising as the water flows.
Farther south the springs turn tropical. Boiling Lake in Dominica's Morne Trois Pitons National Park is a flooded fumarole, one of the largest hot lakes in the world, its grey water kept at a rolling boil and veiled in steam. Las Grutas de Tolantongo in Hidalgo fill a deep canyon with a warm, turquoise river and grottoes fed by thermal water. And on the small island of Uunartoq in southern Greenland, a natural warm pool sits within sight of drifting icebergs.
In this list
| # | Place | Type | Country | UNESCO |
|---|---|---|---|---|
| 1 | Grand Prismatic Spring | Hot spring | United States | |
| 2 | Mammoth Hot Springs | Hot spring | United States | |
| 3 | Fly Geyser | Geyser | United States | |
| 4 | Boiling Lake | Hot spring | Dominica | |
| 5 | Las Grutas de Tolantongo | Hot spring | Mexico | |
| 6 | Uunartoq | Hot spring | Greenland |
01 Grand Prismatic Spring
United States44.525° N 110.838° W
Image by MikeGoad from Pixabay The colours are alive. The blue in the centre is simply the intrinsic colour of deep, clear water, strongest where the spring is hottest and sterile. Towards the edges, where the water cools, mats of heat-loving bacteria and archaea take over, and each temperature band favours organisms with a different balance of chlorophyll and carotenoid pigments — greener where it is hotter, orange and red where it is cooler. The mats shift with the seasons, turning richly orange and red in summer and darker green in winter.
Did you know? It is the largest hot spring in the United States, set at about 7,270 feet (2,220 m) above sea level.
02 Mammoth Hot Springs
United States44.971° N 110.706° W
Image by Steppinstars from Pixabay The water comes from a long way off. Heat from the same magma system that feeds the rest of Yellowstone warms water at Norris Geyser Basin, which then travels north underground along a fault through limestone, cooling on the way until it emerges at no more than about 73 °C. Because the vents keep moving, the scenery never settles: Minerva Terrace, the most famous of the formations, has gone dry after the flow shifted. The names read like a classical dictionary — Cleopatra, Minerva, Aphrodite, Cupid — alongside Liberty Cap, an extinct spring cone standing alone like a stone thumb, and Orange Spring Mound.
Did you know? The limestone the hot water dissolves on its way up belongs to the Madison Formation, laid down in a shallow sea some 350 million years ago.
03 Fly Geyser
United States40.859° N 119.332° W
Jeremy C. Munns · Public domain Everything since has been genuinely natural. The escaping mineral-rich water has spent six decades depositing calcium carbonate, building the geyser's own travertine mound a few inches taller every year, and the vivid red and green streaks across its surface come from thermophilic algae that thrive in exactly the scalding, mineral-heavy micro-climate the accident created. It's a landmark that started as a mistake and has been quietly finishing itself, on its own schedule, ever since.
Did you know? When the 1964 well began to vent, it released enough pressure that the original 1916 geyser nearby dried up.
04 Boiling Lake
Dominica · 10.2 km from Roseau15.318° N 61.294° W
No machine-readable author provided. Pembo13 assumed (based on copyright claims). · Public domain The first recorded sighting was in 1870, by two Englishmen working on the island, Edmund Watt and Henry Nicholls. In 1875 Nicholls returned with the government botanist Henry Prestoe and measured water temperatures of about 82 to 92 °C along the edges; the boiling centre could not be measured. The lake has never been entirely stable. After a phreatic eruption nearby in 1880 it vanished and was replaced by a fountain of steam and hot water, and between December 2004 and April 2005 its level dropped by about ten metres before it refilled in a single day.
Did you know? Small steam-driven blasts near the lake in 1880 and 1997 are the only historically confirmed volcanic eruptions on Dominica.
05 Las Grutas de Tolantongo
Tolantongo
Mexico20.650° N 99.000° W
Image by Wolfman-9 from Pixabay The main grotto is a karst cave hung with stalactites and stalagmites, and the warm water that rises inside it flows out of the cave mouth as a shallow stream. Next to it a short tunnel, about 15 metres long, fills with vapour like a natural steam bath. Below the cave mouth, rimstone pools built by the mineral-laden water step down the slope, and the river itself is warm enough to wade and float in for long stretches. Higher up the canyon wall, a series of man-made pools has been built into the canyon wall, looking out across the gorge.
Did you know? The canyon belongs to the San Cristóbal ejido of 112 families, whose land covers about 5,200 hectares, of which only around 40 are open to visitors.
06 Uunartoq
Greenland60.500° N 45.333° W
Svickova · Public domain The island and the fjord behind it are full of traces of those two peoples. Uunartoq has ruins of Norse and Inuit settlements, and the surrounding area formed the southern end of the Norse district of Vatnahverfi, farmed from the 10th to the 15th century before the Norse Greenlanders vanished. On the western shore of the fjord, across the water from the springs, lie the ruins of a church site generally identified as the Benedictine convent of the Eastern Settlement. There, in 1948, the Danish archaeologist Christen Vebæk found a fragment of a wooden disc only 7 cm across, with notches around its edge and carefully scored lines on its face.
Did you know? Gas bubbles rising through the water contain about 2 percent helium.
How this list is ranked
Places are chosen for how they look, not for how famous they are: each one has its own description and a photograph credited to its author. The order is a single world ranking that weighs the beauty of the place in curated photography together with how widely it is documented — the number of language editions of its encyclopedia article and how often that article is read in a year. The list is rebuilt as places are added, so the order and the counts on this page are always current.
Questions people ask
- What are the most beautiful hot springs in North America?
- On our list, Grand Prismatic Spring (United States) ranks first, followed by Mammoth Hot Springs (United States) and Fly Geyser (United States).
- Which country has the most hot springs in North America?
- In our collection, the most come from the United States (3), Dominica (1) and Greenland (1).
- Why is Grand Prismatic Spring so colourful?
- The colours come from bands of heat-loving microbes. The centre is too hot for most life and looks deep blue, while the cooler water towards the edges supports mats of bacteria whose pigments range from yellow to orange and red.
- Is Fly Geyser natural?
- Only partly. It formed after a well was drilled on the site in the 1960s and left uncapped; geothermal water has flowed from it ever since, depositing the mineral mounds that give the geyser its shape.
- What is Boiling Lake in Dominica?
- It is a flooded fumarole: a crater filled with water that is heated from below by volcanic gases. It is often described as the second-largest hot lake in the world, after Frying Pan Lake in New Zealand.
- How many hot springs are on this list in North America?
- The list covers 6 hot springs in 4 countries. The United States has the most, with 3.