Viking’s Paulo Fonseca journeys along the Douro River through one of Europe’s most celebrated wine regions. He discovers the UNESCO-listed Alto Douro, where terraced vineyards, historic villages and traditional wine estates rise above the river. He also wanders the cobblestone streets of Porto, admires Pinhão’s distinctive blue-and-white tiled railway station and experiences the flavors and traditions of Marialva, an enchanting town with more than 2,500 years of history.