Dedicate your second day in Gijón to exploring its rich cultural heritage. Visit the Laboral Ciudad de la Cultura, a stunning cultural complex housed in a former university. Explore its art exhibitions, theater, and botanical garden. Next, head to the Roman Baths of Campo Valdés, an archaeological site that offers a glimpse into Gijón's Roman past. End the day with a stroll along the picturesque Cimavilla neighborhood, known for its charming streets and historic buildings.