What are the best and most interesting cities to go to in Spain?

• Barcelona - Barcelona really has everything to offer: architecture, culture, shopping, beautiful parks, a lively nightlife and nice beaches. The ideal city for a city trip or a weeks-long vacation. Barcelona is the city of the famous architect Gaudí. Other attractions are the Ramblas, a long street running to the monument of Columbus, and Camp Nou, FC Barcelona's soccer stadium.
• Madrid - The city contains numerous museums and galleries, parks and gardens. A must see is the Royal Palace, Madrid Cathedral and the Templo de Debod, which is one of the few Egyptian structures in Europe. Get great views of the city at the Faro de Madrid tower or stroll through the La Latina neighborhood. Furthermore, the Gran Via is highly recommended, this is considered the Broadway of Madrid. Madrid has a nightlife like you experience in few places, open-air nightclubs, flamenco bars, terrazas (open-air café) and hip clubs where you can spot soccer players.
• Malaga - Right on the southern coast of Spain is Malaga. It is the port city of Andalusia and the largest city on the Costa del Sol. In Malaga, you can easily combine a city break with a sun vacation. With dozens of museums, the Picasso museum is the most famous. Other important sights are the Roman theater, the Moorish fortress and the covered markets. Tasty seafood restaurants and tapas bars are everywhere in this port city.
• Salamanca - Go out in Salamanca. Salamanca is a well-hidden city in the Spanish interior, and with its international and Spanish students, it is the student city of Spain. The most famous nightlife spots are in the historic center and Plaza Mayor. Every bar, pub and club here has its own setting.
• San Sebastian - Surfers all over the world come to this place to surf. By now it is part of daily life here and so (from spring to fall) many surfing competitions are held.
• Seville - The historic center of Seville is full of monuments, museums and romantic parks. The most famous structure in Seville is the Real Alcazar, Seville's royal palace with beautiful gardens. Or visit the Plaza de Espana, the park Maria Luisa and the Cathedral of Seville. For nightlife, this is also a great place to go, flamenco originated here and throughout the city you can visit typical flamenco bars. 
• Valencia - Valencia's cathedral is famous for its different architectural styles. At the Mercado Central, the largest market in all of Europe, you can really buy and taste everything or spend a whole day on the beach in the summer. A modern attraction is the Ciudad de las Artes y Ciencias, otherwise known as "the City of Arts and Sciences. During the festival Las Fallas in March, Valencia is the place to be.

What are the highlights to see in Spain?

• Alhambra and Albayzin in Granada - Granada is known for its Moorish culture found throughout the city. The Alhambra palace and fortress belonged to the Moorish rulers in Granada and is a real must-see. The Albayzin is the Arab neighborhood in the city of Granada. Here you can still find a traditional souk and several Arab restaurants.

What are the best activities to do in Spain?

• Visit soccer match - Football is an important sport in Spain. Because of the rivalry, soccer matches between the country's administrative center, Madrid, and the country's economic heart, Barcelona, get a lot of attention. But any soccer match in Spain is an experience to witness.
• Take a dance class in Spain - Salsa classes are held all over Spain, and it is often possible to join a free class. Flamenco is a popular dance in the south, with Seville being the "Flamenco capital. Try to find a smaller performance, which are often free and hidden in basements or unfamiliar buildings.