Sagrada Familia, Gothic Quarter, La Rambla (Vibrant City Tour)
Prado Museum, Puerta del Sol, Retiro Park (Madrid Artsy Trail)
Ciudad de las Artes y las Ciencias, Valencia's historic sites, Playa de la Malvarrosa (Futuristic Cityscape)
Plaza de España, Alcázar of Seville, Triana Neighborhood (Authentic Experience)
Playa d'en Bossa, San Antonio Sunset Strip, Amnesia Ibiza, Pacha Ibiza (Island Escape)
Belém Tower, Jerónimos Monastery, Alfama District, Time Out Market (Cultural & Food Tour)
Praia da Rocha, Lagos, Benagil Cave, Parasailing and Jet skiing (Beach Adventure)
If you have more time, explore more of Valencia, Seville or Lisbon. Or, add more adventure by trying kite surfing in Algarve. If you have less time, consider skipping Madrid or Seville. For cheaper options, ditch the paid attractions and wander around the cities to experience their street art, culture and food scene. Don't forget to pack for the beach!