Caldea
Les Escaldes, Andorra
Caldea is a spa resort in Escaldes-Engordany, Andorra. Finished in 1994, it has 18 floors. At 6,000m² it is one of Europe's largest spas, and at 80 metres in height, it is Andorra's tallest building.
Hotel data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).