Although it's located in Spain rather than in Portugal, the Santiago de Compostela Cathedral makes for a fabulous day trip from Porto, particularly if you love architecture or religious history. The cathedral is an important pilgrimage site, but its breathtaking beauty draws plenty of non-pilgrims as well, although it's worth noting that tourists are discouraged from visiting when the pilgrims' mass is being held. However, outside of this time, visitors are welcome to admire the elaborate High Altar and medieval statues, descend into the crypt where the ashes of Saint James the Great are kept, and take a guided tour of the cathedral rooftop.
Santiago de Compostela Cathedral, Praza do Obradoiro, s/n, 15704 Santiago de Compostela, A Coruña, Spain
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Step 4: Estimate your driving time using Google Maps (click the blue 'Directions' arrow in the search box).
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