Baldi Hot Springs

At La Fortuna in Costa Rica's Alajuela province, Baldi Hot Springs cascades through a series of pools, slides, and waterfalls set within dense jungle at the foot of Arenal Volcano. The sulfurous water at 35 °C and a neutral pH of 7.2 fills pools of various temperatures and designs, creating a resort experience that combines the volcanic thermal heritage of the region with the exuberance and colour of tropical Costa Rica. The faintly sulfurous quality of the water blends naturally into the humid forest air, barely noticeable against the riot of bird calls and jungle sounds.

At 35 °C, the water is soft, immediately welcoming, and gentle on the skin — its pH and sulfurous composition giving it a slightly silky texture that complements long evening soaks. When night falls and Arenal's outline glows against the sky, the illuminated pools and the warm air of the rainforest combine to create a mood that is theatrical and genuinely tropical. Baldi is one of Costa Rica's most visited and spirited thermal resorts, embodying the country's volcanic landscape in its most generous and festive form.