Roman thermae in Campo Valdés, Roman baths archaeological site in Campo Valdés, Gijón, Spain.

The Roman thermae in Campo Valdés is an excavated bathing complex in Gijón, near the beach, with separate sections for cold, warm, and hot water. The site also includes residential quarters and is connected to a museum that displays objects found during excavations.

The complex was built in the early centuries after Christ, just outside the walls of the Roman town of Gijón. Over time the buildings fell out of use and were gradually buried until modern excavations brought them back to light.

The site takes its name from Campo Valdés, the square in Cimadevilla where the ruins lie. After abandonment in the 5th century the baths became a rubbish dump and later a cemetery for the churches of San Pedro, built from the 15th century on the same spot. The church was destroyed in the Civil War and rebuilt over part of the ruins, hiding them permanently.

The site is easy to reach on foot from the beach, with the entrance close to the waterfront. It is worth spending time outside among the open-air remains before entering the attached museum, as seeing the layout first makes the exhibits easier to follow.

The baths were found by chance in 1903 during sewer works; Calixto Alvargonzález and Julio Somoza carried out the first excavations and wrote a report that the Gijón city council archived. The site was declared a Bien de Interés Cultural on 8 May 1987.