There are number of interesting sights, sites, and buildings/architecture to see. Old German churches, waist-high iron fences that kept the running pigs out of people's yards,specialty breweries, Findlay Market, etc. there is a lot to see throughout the first 20 or so streets north of the river.
For only a dollar per ride, you can get from downtown Cincinnati and go into Newport and Covington. I only wish they went up to the Zoo. On our return trip from Newport, we were the only riders and our driver was very courteous and shared lots of information with us which enhanced the remainder of our visit.