Porto Hop-On Hop-Off Tour with Optional River Cruise and Wine Tasting. Discover Porto’s best historical sights during this Porto hop-on hop-off tour with optional river cruise and wine tasting, valid for 48-hours. Whether you like historic castles, delectable port wine, or the scenic coast, this tour has a stop for everyone. Experience the best of northern Portugal on two routes exploring Porto and nearby beach towns of Vila Nova de Gaia and Matosinhos. As always, hop-on hop-off allows you ample time to savor attractions as long as you wish. Book and Save 10% Off Porto Hop-On Hop-Off Tour with Optional River Cruise and Wine Tasting.