The duck tours are everywhere! I first saw the amphibious vehicles taking passengers around Boston a few years ago. I don’t know which city had them first, but it seems that they are spreading across the U.S. and the world. The Boston tour site credits tours in the midwest with starting the phenomenon, however another site claims that the first documented tour using an amphibious vehicle was in Massachusetts in 1950. A web search will pull up duck tours in Austin, Pittsburgh, Seattle, Singapore, Tampa Bay, Washington D.C., Dublin, Chicago, Oahu, Baltimore, London, the Caribbean, a rainforest in Australia, Liverpool, Bay of Islands New Zealand, Providence, Wisconsin Dells. Most of the vehicles are the General Motors constructed DUKWs and before you start wondering if these numerous tours will use up the available supply, don’t worry, over 20,000 were built starting in WWII.