If your trip to Porto is all organized but your travel itinerary is a bit on the empty side, let us give you a helping hand.Sandeman Cellars deserves more than just a quick drive-by tour. Step out of your car and spend some quality time exploring this landmark sight during your time in Porto.Porto Cathedral and Museum of Port Wine are interesting attractions that all travelers should make time to explore. Plan out a route and enjoy taking in each one.Stop by Dom Luis I Bridge. It's one sight you'll usually find on many visitors' to-do lists. Ribeira Square and Clerigos Tower are also a stone's throw away and worth a detour.