We will be visiting the Porto area (staying in Gaia) in one week and want to do a day trip to the Douro Valley. We will have a car, but also want to do a boat trip on the river during the trip. A few questions related to this:
1) What is the most interesting part (accessible from Porto) of the valley? I have read somewhere that simply doing a boat cruise from Porto and back will not get you far enough up the river to enjoy the highlights of the valley.
2) The most important question - what would be the best (most scenic) combination of car, boat and perhaps train to visit the valley (e.g. car from Porto to x, train from x to y, boat from y to x, car from x to Porto)? We like the idea of driving along the valley because we can stop wherever we want and explore at our own pace, but also the train and boat rides look gorgeous, so we would love to combine them somehow if possible.
3) Is there anything worth visiting along the river, but "inland", like for example Lamares?
Thank you in advance.