Start the day with a visit to the Retiro Park, a beautiful green space in the heart of the city. Next, head to the Museo del Prado, one of the most important art museums in the world, to view their impressive collection of European art. End the day at the Mercado de San Miguel, a vibrant indoor market with a variety of food stalls offering local delicacies.
Step back in time to the Middle Ages with a visit to Toledo, known as the city of three cultures, due to its peaceful coexistence of Jews, Christians, and Muslims. Explore its rich religious history with visits to the Cathedral of Toledo and the Synagogue of Santa María la Blanca. End the day with a stroll around the charming streets of the Old Town, admiring the city's historic architecture.
Discover Granada's fascinating blend of Moorish and Christian cultures with a visit to Alhambra Palace, a UNESCO World Heritage site filled with stunning examples of Islamic art. Next, explore the Albaicín neighborhood, a charming area with narrow winding streets and stunning views of the palace and the Sierra Nevada mountains. End the day with a visit to Sacromonte, a set of caves that have been inhabited for centuries and now house flamenco shows.
Begin the day with a visit to the Cathedral of Seville, the largest Gothic cathedral in the world and a UNESCO World Heritage site. Next, explore the breathtaking Alcázar of Seville, a palace complex with stunning examples of Mudéjar architecture. In the evening, attend a flamenco show at a local venue, such as Casa de la Memoria, to experience one of Spain's most iconic art forms.
Begin the day with a visit to La Sagrada Familia, Antoni Gaudí's masterpiece and one of Barcelona's most famous landmarks. Next, stroll down Passeig de Gracia, admiring its modernist buildings, such as Casa Batlló and Casa Milà. In the evening, head to El Raval, a vibrant and multicultural neighborhood, for some tapas and drinks.
Discover the charming town of Girona, with its well-preserved medieval walls and historic Jewish quarter. Visit the Cathedral of Girona and the Arab Baths to learn about the town's rich history. End the day with a visit to El Celler de Can Roca, one of the world's best restaurants, to experience the latest in modern Catalan cuisine.
If you have more time, consider visiting other Spanish cities such as Valencia or Bilbao. If you have less time, consider cutting out a city or two from this itinerary and spending more time in the remaining cities. Additionally, be sure to book your tickets to popular attractions such as La Sagrada Familia and Alhambra Palace in advance to avoid long lines.