Before motor vehicles it was not uncommon for boats to be towed through canals by mules or draft horses, which walked along a towpath adjacent to the canal. In many places, where the canals are no longer used except for pleasure, the towpaths have become pedestrian walks or bicycle paths.
In Britain an organization exists to preserve the tradition of horseboating - that is, towing a boat along a canal with a draft horse. The Horseboating Society brings their horseboats to fairs and events, and performs long-distance trips, with the aim of maintaining access to the canals and of educating the public about this traditional form of transportation.
It sounds like a pleasant way to see the country! The link above has lots of photos, and detailed information about the history and tradition of horseboating.