| Coimbra | Lissabon | Porto |
Porto is the country's second city, and the capital of the North. Its houses cling to the abrupt slopes of the Douro river, and you should head to the square of the old Nossa Senhora da Serra do Pilar convent for the best view. The historical centre is classed as a world heritage site by Unesco, and to discover the history and atmosphere of the town, you should explore it on foot.
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