Reunification Express, 11 days: Beginning Hanoi, this north-to-south tour of Vietnam allows you to visit its most popular destinations. Most travelling is aboard the Reunification Express train, a fascinating way to view the unfolding landscape. Discover the charms of graceful Hanoi, head down to Hue. See Hoi An, a favourite of every traveller. Cruise the offshore islands & relax in the sun at Nha Trang before catching the overnight sleeper train down to the steamy southern city of Saigon.