Here are nine days of exploration in some of the most memorable (and oldest) cities in North America. Starting in New York, travel north to the must-see city of Montreal. Roam the old town or climb Mount Royal for staggering views of the city. Then it's back south again through serene Acadia National Park and finally on to historic Boston to roam cobblestone streets, explore some of its world-class museums (like the Isabella Stewart Gardner!), and eat clam chowder. Make new memories in some very old places.