Contact quintas directly to book visits, with lunch or dinner, or ask the Port Wine Route to put together an itinerary for you.
BBC: The changing landscape of the Douro River Valley
2.
Some of the original stone markers can still seen at the prize-winning winery Quinta Nova da Nossa Senhora do Carmo, one of dozens of local quintas (estates) where you can dine or stay in charming and authentic surroundings.
BBC: The changing landscape of the Douro River Valley