Caldes de Montbui is a municipality in the Vallès Oriental region, some 35 km north of Barcelona. Its population, which exceeds 16,000 inhabitants, is spread over the town centre and several housing estates, including El Farell, which was built on a hill at an altitude of over 800 metres.
The name 'Caldes' has to do with the word 'warm' or 'hot' and refers to the hot waters that come out of the interior of the earth at a temperature of 74 °C, being one of the hottest springs in Europe.
From this thermal activity, which became important at the end of the 19th century, the urban growth of the municipality has developed, and its natural surroundings and mild climate have also contributed to this growth.
The Lleó fountain, built in 1581, is located in the town square where the Roman baths, the town hall, the Broquetas spa and the Manolo Hugué museum, dedicated to the important 20th century painter after whom it is named, are also located.