Witness nature's amazing spectacles as the deep blue sea meets the dramatic coastlines of Canada and New England on a 7-day cruise aboard Norwegian Breakaway. Take in the amazing views of the vibrant and charming city of Portland from the Portland Observatory, America's only remaining historic maritime signal tower. In Bar Harbour, hike through spectacular Acadia National Park or catch a glimpse of humpback whales from Cadillac Mountain. And in Saint John, don't miss the Reversing Rapids, a natural phenomenon caused by the bay tides colliding with the river.