Stroll, people watch, shop
Swim, sunbathe, relax
Explore, architecture, views
Iconic, architecture, history
Palace, gardens, history
Iconic, architecture, history
Historic, views, architecture
UNESCO, history, architecture
Harry Potter, books, history
Riverfront, views, nightlife
If you have more time, consider visiting Toledo, Valencia, or Granada in Spain, or Sintra or Cascais in Portugal. If you have less time, consider skipping Benidorm and spending more days in the other cities. Also, take advantage of free walking tours that are available in many cities to save money and learn more about the local culture.