In the last days of November and in December I traveled again in USA for almost three weeks to visit some of the National Parks I already knew and four State Parks unknown for me. The visit, presented here, is organized as numbered galleries in a chronological way of each one of the places I visited. I decided to make those galleries as a trip and not add, for instance, the photos made in Bryce Canyon in the Bryce Canyon Gallery that already exists. That way, everybody that visit the USA 2010 galleries can understand how the trip was organized and see those wonderful places in the same sequence as I've saw. Thank you very much for the time you spent traveling with us.