The hot springs have been exploited since Roman times, and the remnants of the Roman baths and other Roman buildings can still be seen. The source of la Font del Lleó ("Lion Springs") in the main square emerges at more than 70 °C (158 °F). The town conserves parts of its medieval fortifications and the Torre de la Presó (prison). The hermitage of la Mare de Déu del Remei dates from the sixteenth century, as does the church of Santa Maria with its baroque entrance. The roman church of Sant Sebastià de Montmajor, in the village of the same name at the extreme north-west of the municipality, is particularly well preserved.
The artist Manolo Hugué lived and worked in Caldes de Montbui, and his house has been converted into a museum displaying both his works and those of other artists. The town also has an archeological museum and the Delger museum of furniture, paintings and sculptures.
Continuing in this artistic tradition is the master landscape painter Ramon Vilanova, a native son of the city and lifetime resident.
Climate
Climate data for Caldes de Montbui (elevation: 203 m (666 ft), data from 1941-1969)
Month
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Year
Mean daily maximum °C (°F)
13.3 (55.9)
14.7 (58.5)
17.7 (63.9)
20.5 (68.9)
23.7 (74.7)
27.7 (81.9)
30.9 (87.6)
29.9 (85.8)
27.4 (81.3)
23.0 (73.4)
17.6 (63.7)
13.6 (56.5)
21.7 (71.1)
Daily mean °C (°F)
6.7 (44.1)
7.8 (46.0)
10.6 (51.1)
13.1 (55.6)
16.3 (61.3)
20.2 (68.4)
23.3 (73.9)
23.0 (73.4)
20.6 (69.1)
16.2 (61.2)
11.0 (51.8)
7.5 (45.5)
14.7 (58.5)
Mean daily minimum °C (°F)
0.0 (32.0)
0.9 (33.6)
3.6 (38.5)
5.7 (42.3)
8.9 (48.0)
12.8 (55.0)
15.7 (60.3)
16.2 (61.2)
13.8 (56.8)
9.5 (49.1)
4.4 (39.9)
1.5 (34.7)
7.8 (46.0)
Source: Sistema de Clasificación Bioclimática Mundial[3]
Demography
1900
1930
1950
1970
1986
2001
3474
4777
4729
8161
10,407
15,536
Note
^ Caldes de Montbui became part of the Vallès Oriental in the comarcal revision of 1990: previously it formed part of the Vallès Occidental.