If you only have five days in Portugal, you can pair two major cities—Lisbon and Porto, for example—or choose one region for an in-depth experience. Explore the dreamy Algarve coast, head to the wine-famous Duoro Valley, or stick to Lisbon and its surrounds. The itineraries below offer unique options that appeal to all kinds of travelers, from Portugal first-timers to foodies and wine enthusiasts to sun worshipers.