Hanoi, the capital of Vietnam, is a bustling metropolis and has been for almost a thousand years. It's possible to travel here on a dime, with luxury lodging starting at under $50 a night. Dollars go far in the way of shopping and dining, but there's plenty to enjoy that's free. Walk the city's streets and get a glimpse of architecture through the ages. The Old Quarter, especially, will charm you.
Photo courtesy of Jon Rawlinson