A guided walking tour!
The dictionary lists the second meaning of “magical” as “beautiful or delightful in such a way as to seem removed from everyday life.” This is precisely the feeling I get from spending time in Old San Juan. It is all at once a delightful mix of ancient, historical, modern, urban and tropical. It is brimming with art, music, architecture, food, and drinks. And its people add the final sprinkle of pixie dust to the scene with their warmth and hospitality.