Cross the border into Spain and retrace part of St James Way – a sacred route followed by centuries of pilgrims – on a visit to Santiago de Compostela from Porto. On this memorable day trip, explore Compostela's famous cathedral and the city's UNESCO World-Heritage-listed Old Town. Back in Portugal, pay a visit to Valença do Minho, dominated with a fortress of two towers and a double great wall projected in the Vouban style during the return ride to Porto.