My traveling partner (my son) and I have traveled the country extensively. We have hit most of the NPs, and I will concur that Muir Woods is great. This past year we walked the Appalachian Trail and while clearly not a vacation, we did see many great sites and attractions. (Send me a PM if you’d like to see the link to my pictures of that trip.)
I have never been to Hawaii, although I have two plane tickets to Hawaii that are still sitting in my email, but long expired. My son spent a month in Alaska and he said it was one of his favorite places to visit; northern lights, curling, dogsledding, etc.
We have also done the backpacking Europe thing numerous times, doing what we called urban backpacking, but the reality is we are more of homeless vagrants in Europe, sleeping anywhere, and rapidly losing weight. So many great places to visit with Italy at the top of the list, but loved Ireland, Romania, Berlin, Budapest, Greece, etc. We did hang out with the princes and the princesses of Liechtenstein, which was pretty cool. The Princess, “Ah, only Americans.” We ran with the bulls in Pamplona, Spain. Auschwitz Concentration Camp was a different end of the spectrum, as far as vacations go, but definitely worthwhile. And, we just barely missed getting arrested at the Vatican.
I will be leaving again for a nine week homeless trek through Europe following a New Jersey guitarist around very soon. Homeless and poor, with accommodations for one night out of the nine weeks that I will be there, not most people’s idea of a fun vacation.
However, my favorite trip was probably China, where I visited Beijing, Shanghai, and Mongolia. I was in Beijing in 1989, in Tiananmen Square during the student uprising, which some people accuse me of starting.