20. New Orleans made the list because it's one of the oldest cities in the country and walking tours abound through richly historic neighborhoods.
( Photo by Mario Tama/Getty Images / July 13, 2012 )
We've upgraded our reader commenting system. Learn more about the new features.
The Baltimore Sun encourages civil dialogue related to our stories; you must register and log-in to our site in order to participate. We reserve the right to remove any user and to delete comments that violate our Terms of Service. By commenting, you agree to these terms. Please flag inappropriate comments.