There are many nice boat tours in Porto. Porto also known as Oporto, offers a wide range of watersports and boat tours, including Private Cruises , for a Full-day, by night, in the Douro Valley with lunch, on a catamaran. It's definitely the best way to see the Douro Valley and river. Near Porto, you can do a surf trip or book Private surf lessons. Matosinhos is the most popular place near Porto to learn how to surf.