Paducah, located near the confluence of the Ohio and Tennessee rivers, is a popular port on steamboat cruise itineraries. Developed as a river and railroad hub, the Kentucky city was once home to a considerable manufacturing base, and its legacy of impressive houses and commercial buildings is testament to better economic times. Visitors coming ashore from riverboats pass through an opening in the flood wall built after the great inundation of 1937. Once inside, everything worth seeing is within walking distance.