Dedicate your fourth day to exploring the enchanting gardens surrounding Montjuïc Castle. Start with the Mirador de l'Alcalde, a picturesque viewpoint offering stunning vistas of Barcelona's skyline. From there, make your way to the Jardins de Mossèn Costa i Llobera, a beautiful cactus garden with over 800 different species. Continue your journey to the Jardins de Joan Maragall, a serene park with elegant sculptures and colorful flower beds. End your day by visiting the Jardins de Laribal, known for its terraced gardens, fountains, and charming pavilions.
