Built in the early twentieth century on the site of an abandoned convent – of which only the ghost of a nun supposedly remains – São Bento has a fine, respectable granite exterior. But then you head inside. And… just… wow. The walls and ceilings are decorated with more than 20,000 tiles depicting significant moments in Portuguese history, painted in the blue-and-white ‘azulejo’ style by Jorge Colaço. No Porto itinerary is complete without a trip here.