The name Escaldes comes from the water. Springs surface here at around seventy degrees, and the town grew up around them long before anyone thought of tourism. Today they feed Caldea, the largest thermal complex in southern Europe, marked by a glass spire eighty metres high that has become the country's most recognisable modern landmark.
What you actually get
The main lagoon is the heart of it: a large indoor pool at around thirty-two degrees, connected to an outdoor section where you swim out into the open air with mountains around you — the best part of the whole place in winter, when it is snowing on your head and the water stays warm. Around it are Turkish baths, saunas, an Indo-Roman bath, grape and citrus jacuzzis, and hydromassage jets.
Inúu is the adults-only section, quieter and more expensive, with its own outdoor pools and treatments. Likids is the children's area, which keeps families out of the main lagoon. If you want calm, the difference between these zones matters more than anything else in the price list.
Practical notes
Entry is sold in three-hour blocks, which is genuinely enough. Bring a swimming cap — it is compulsory in some zones and buying one there costs more. Weekday mornings are the quietest; Saturday afternoons in ski season are the busiest hours of the week, and worth avoiding entirely. Book online in advance during school holidays.
The other thermal option
If Caldea feels too much like a leisure complex, the country has a quieter alternative. Several hotels in Escaldes draw on the same springs for their own smaller spas, and up in the mountains there are free natural hot springs, most notably at La Font del Ferro and the pools near Els Cortals. These have no facilities at all, which is precisely the point for some visitors.
Why the water is here
Andorra sits on a fractured granite massif, and rainwater that filters deep along those fractures is heated at depth before rising again along fault lines. That geology is why a country this small has thermal springs at all, and why the water arrives rich in sodium, sulphur and silica — the reason the springs were used for washing wool and, later, for bathing.
What to bring
Towels and robes are hired rather than included in the basic ticket, so bringing your own saves money. Lockers take a coin or a wristband depending on the zone. Flip-flops are worth having for the walkways. And allow time at the end: the changing rooms get congested on the hour, when each three-hour block empties at once.