As someone who travels all over the world, I have done many of these tours. This one was just AMAZING. From the beginning, when I had some crazy train/plane/luggage logistics that I needed help with, Nate went out of his way to help me over the phone with amazing ideas. And then, OMG, and then we met our tour guide, Rob, who is the funniest, most knowledgeable and passionate person about his city. DO this tour, and do it now.