England: Historic London — "The City"
This two-mile walk from Trafalgar Square to London Bridge parallels the Thames, on the same main road used for centuries. Along the way, you'll see sights from The City's storied past, such as St. Paul's Cathedral, historic taverns, and narrow alleyways with faint remnants of the London of Shakespeare and Dickens. Allow about three hours for this walk. Don't forget to download the handy PDF companion map at http://www.ricksteves.com/audiotours.
