The thermal water springs have played a key role in the two thousand years of history of Caldes de Malavella. From the mid-19th century, Caldes became an active spa town and summer resort for many well-to-do families, who built summer homes there in the architectural style in fashion at the time. Thanks to this phenomenon, Caldes boasts the most important modernist heritage in the county.

• • Balneari Vichy Catalán (av. Doctor Furest). Split into two wings, the façade of this large spa facility, designed by Gaietà Buïgas (designer of the Columbus Monument in Barcelona) has an oriental style, although the entrance is unequivocally modernist. Inside there is a chapel with neo-Romanesque features. Spa open to the general public. Veure ubicació aquí (41° 50′ 20″ N, 2° 48′ 16″ E)

• • Avinguda Dr. Furest. At the start of this street, which links the town to the station, some noteworthy summer homes were built, such as Casa Matheu (nº 6 – 8), with neo-Gothic elements, ; Torre dels Ocells (nº 10) or the original Casa de les Punxes (nº14). Private

• • Casa Pla i Deniel (pl. St. Esteve, 16). Built for the lawyer and politician Narcís Pla i Daniel, it is composed of the living area, with windows featuring relief decorations and moulded cornices, and a rear area composed of garden surrounded by ancillary buildings (garage, storeroom, services), with bare brick modernist elements. Private. Home to a community of Carmelite Sisters of Charity–Vedruna. Veure ubicació aquí (41° 50′ 16″ N, 2° 48′ 30″ E)

• • Balneari Prats (c/ Pla i Deniel, 6). The façade of this large three-storey building with two wings is endowed with several classical elements, in particular the decorative plant motifs in relief. The main entrance, with a modernist feel, dates back to the last alterations, in 1912. Spa open to the general public. Veure ubicació aquí (41° 50′ 15″ N, 2° 48′ 31″ E)

• • Casa Quintana (c/Prim – c/Sta. Maria). This is one of the most important modernist buildings in Caldes. Its most striking features include the large double windows and, above all, the hexagonal corner bay window, crowned with a glazed ceramic dome. Private. Shop on the ground floor. Veure ubicació aquí (41° 50′ 12″ N, 2° 48′ 31″ E)

• • Casa Rosa (c/ St. Grau, 19). Its current appearance is the result of alterations commissioned by Pau Estapé, an industrialist in the water sector and promoter of the excavations of the Roman baths. Its most remarkable features are the main entrance, with a surround shaped like the ace of spades, the double window with a wrought-iron convexly curved railing and the glazed ceramic decorations on the façade. Public facility, social club for pensioners and bar. Veure ubicació aquí (41° 50′ 18″ N, 2° 48′ 31″ E)

• • Rambla Recolons. Rambla Recolons was developed as an area for strolling and leisure by Bartomeu Recolons, an industrialist and summer resident of Caldes. Some noteworthy houses were built around it: houses no. 15 and 24, Colònia Rodríguez (nº 37) and, in particular Casa Mas Ros (nº 1) and Casa Bell Estar (nº 54), both of which are distinctive modernist buildings. Private.

• • Villa Rosario (Rambla d’en Rufí, 12). Commissioned by Otto Streitberger, a German (hence its nickname, the Germans’ Tower) who dedicated it to his Andalusian wife, Rosario. This explains the oriental style of the house, with scalloped arches, columns and floral decorations and with arabesque surrounds. Private.Veure ubicació aquí

• • Passeig de la Granja. This housing development, built in the 1920s, was an initiative of the industrialist Miquel Picó i Jou. Although the development was not completed, some noteworthy houses were built there, such as Villa Catalina (pg. de la Granja, 8), Torre nº 1 (pg. de la Granja, 1) and Torre nº 5 or Torre dels Cavalls (c/ Jacint Verdaguer, 53). Private.

• • Font de la Vaca Park (c/ St. Esteve – baixada de la Font de la Vaca – c/ Nord and c/ Verdaguer). This park, which was the focal point of the Granja housing development, contains several interesting architectural elements, such as the fountain itself, with ceramic decorations and crowned by a dome; the Casinet building, a snack bar also featuring ceramic decoration; and the little brick hut of the water well, with a hexagonal floor plan. Public park.Veure ubicació aquí (41° 50′ 03″ N, 2° 48′ 29″ E)