The Font dels Bullidors is perhaps one of the most striking expressions of Caldes de Malavella’s thermal heritage. Its name is no coincidence: when observing the surface of the water, the constant movement caused by the release of natural gases creates the visual effect of water that appears to be continuously boiling. This phenomenon, visible to the naked eye, makes the spring one of the municipality’s most distinctive landmarks.

Its existence is closely linked to the hydrothermal system that has made Caldes famous since Roman times. The waters emerge from deep underground at a high temperature and with a mineral composition that has been valued and used for centuries. Beyond its historical significance, the Bullidors offer a direct glimpse into a geological process that remains active beneath the town.

Watching this spring is a reminder that Caldes’ thermal phenomenon is not simply part of the past. The constant movement of the water reveals a living natural system beneath the streets and buildings, one that continues to shape the territory. As part of Enselva’t, the Font dels Bullidors is an essential stop for discovering one of the most spectacular and visible manifestations of La Selva’s thermal wealth.