Wonderful Series
I had seen some of this years ago, but finally watched the entire series. Wonderful is the only word to describe this. I've watched many similar types of "travel" related shows and this ranks among the best I've ever seen.
Critics will often point out that because camera crews are along that travel can't be that hard or dangerous as depicted, but what the camera shows will often point out just how unpredictable it can be. I don't want to give away any spoilers about some of the dangerous events that did occur here, but suffice it to say, it was very real. A couple of instances made me think twice about dreams I've had to take similar journeys. While there were splendid vistas to behold, interesting people and cultures along the way, there were also political situations that made some parts of the trip uncertain, in regards to personal safety.
In particular, while viewing the segment in Antartica, I sensed discomfort and anxiety among some of the participants and I'm sure they wondered why they did it in the first place.
But overall, as Michael pointed out, it was worth it and I thank him for presenting this captivating journey to us.