This is one those places that you read about in guide books and it may be just a tad hard to get to but you really really need to go. Go for the stunning landscape - snow on the mountains and desert behind you. Go for the most amazing Chinese Fortress with stunning architecture. Go to see the Gate of no return where those banished left the civilisation of China and marched out to uncertainty. Go for the sheer spectacle and uniqueness and its worth all the effort to get there as this will be one of those places that will stay in your mind forever.