Which parts of Spain are most popular with tourists?

* Barcelona: Barcelona is the capital of Catalonia and the second-largest city in Spain. It is a popular destination for tourists because of its unique architecture, vibrant culture, and delicious food. Some of the most popular attractions in Barcelona include the Sagrada Família, Park Güell, and Las Ramblas.

* Madrid: Madrid is the capital of Spain and the largest city in the country. It is a popular destination for tourists because of its rich history, beautiful architecture, and lively nightlife. Some of the most popular attractions in Madrid include the Royal Palace, the Prado Museum, and the Retiro Park.

* Seville: Seville is the capital of Andalusia and the fourth-largest city in Spain. It is a popular destination for tourists because of its beautiful architecture, charming atmosphere, and delicious food. Some of the most popular attractions in Seville include the Alcazar, the Cathedral, and the Plaza de España.

* Valencia: Valencia is the capital of the Valencian Community and the third-largest city in Spain. It is a popular destination for tourists because of its beautiful beaches, delicious food, and vibrant culture. Some of the most popular attractions in Valencia include the City of Arts and Sciences, the Silk Exchange, and the Central Market.

* Mallorca: Mallorca is the largest island in the Balearic Islands and a popular destination for tourists because of its beautiful beaches, crystal-clear waters, and mild climate. Some of the most popular attractions in Mallorca include the Palma Cathedral, the Bellver Castle, and the Es Trenc Beach.