Cross Douro River from Porto to Gaia and arrive in a few minutes to the bucolic vila of Afurada, where you can try some typical and delicious Porto dishes, specially if you are a fish lover.
You can also visit the douro estuary natural reserve and observe some of the wildlife of the river and Porto from a different view, or go to the beach of Afurada specially known to lovers of Kite-surf and windsurf.
If you are looking for a boat adventure you can visit the Douro Marina and rent a boat or buy special experiences from private or shared sailboat cruises, to luxury yacht tours.