I liked the Serre Madres and the 17th town of Concordia. I thought it was charming, like I said I enjoyed Mazatlan and going off to the different areas provided an insight into th the Mexican people and their way of life. I learned the most there about the culture from that port, but my tour had much to do with that as I had a local teaching us, and answering questions I was not with some huge group on a bus, with a ships tour. But if you do decide to do a ships tour I think Mazatlan has many interesting ones to choose from. I thought it was a pretty port, more urban then Cabo or Puerto Vallarta but the waves crashing where the cliff divers dive and the scuptures along the shore were quite impressive. I got some great photos there, and going into the mountains and away from the port was so peaceful, quiet and lovely. Enjoy this port there is a lot to see, choose what interests you most.