Banos Romanos de Montbui is a Roman thermal complex in Santa Margarida de Montbui in the Anoia region of Catalonia, where a first-century caldarium and archaeological remains of Roman bathing infrastructure demonstrate that the bicarbonated thermal springs of this inland Catalan valley were systematically exploited for communal bathing at the height of the empire. The archaeological site preserves original hypocaust heating channels, inscriptions, and mosaic fragments that place Montbui firmly in the network of Roman thermal stations that crossed the Iberian peninsula as the empire adapted its bath culture to every conquered territory. The Anoia region surrounding the site is the heartland of Cava production, the Catalan sparkling wine made by the traditional method in the limestone caves of Sant Sadurni d'Anoia, making a visit to Montbui a natural bridge between Roman thermal archaeology and contemporary Catalan wine culture.
Insider tip — The Roman baths of Montbui sit in the Anoia comarca of Catalonia, preserving some of the finest visible Roman thermal infrastructure in the Iberian Peninsula alongside a modern spa. The ruins include intact caldarium and frigidarium sections that context the contemporary wellness facility. Located an hour from Barcelona, the site draws archaeologists and spa-goers alike. The warm sulphate-rich water is particularly recommended for musculoskeletal treatments.