Córdoba is one of the few UNESCO cities in Europe where you can spend a full day inside world-class heritage without paying a single euro in entry fees. The Roman Bridge has been free to walk since Julius Caesar's engineers built it in the 1st century BC. The Roman Temple, floodlit at night on Calle Claudio Marcelo, costs nothing. The Calleja de las Flores, the Plaza de la Corredera, the Cristo de los Faroles, the San Basilio patios: all free, all within walking distance of each other.
When the paid attractions do charge, the prices stay low. The Centro Flamenco Fosforito is €2 for adults, with free live recitals every Sunday at noon in the 15th-century Posada del Potro courtyard. The contemporary art centre C3A, fifteen minutes along the riverbank from the Mezquita, is always free. The Museo de Bellas Artes holds Zurbarán and Valdés Leal canvases at no charge for EU citizens. Julio Romero de Torres Museum is €5 but free on Thursday evenings after 6pm.
Food works out the same way. A tortilla slice at Bar Santos costs €2-3. Salmorejo and a glass of house Montilla-Moriles at Bodegas Mezquita runs around €7-9 sharing a couple of tapas. The free walking tour runs on a pay-what-you-wish model: the suggested tip is €10-15, still cheaper than any standard guided tour in the region. A full day including a free tour, lunch at a traditional taberna, three or four museums, and a long evening walk through the historic centre comes in under €15 in entry fees. Add lunch and a drink: another €12-15. That is less than a single entry ticket to many comparable European sites.
This guide covers the 14 best free and budget options in the city: open-air monuments you can visit at any hour, museums that charge nothing or a token fee, and restaurants where locals eat at local prices. It also flags the entry hacks worth knowing: the Mezquita's free morning window (Monday to Saturday, 8:30 to 9:30am), free Tuesdays at the Alcázar, and the Palacio de Viana's free Wednesday afternoons.