Near Kings Island:
Entertrainment Junction - 15 minutes away -World's largest indoor train display (25,000 square feet), as well as a small shopping/dining area and a funhouse. The train display includes a model of Cincinnati's Coney Island as it existed in the late 1960s.
Monster Mini Golf - 19 minutes away - Indoor, blacklight-lit putt-putt.
The Web - 18 minutes away - Indoor go-karts, laser tag, and blacklight-lit putt-putt.
Full .Throttle - 19 minutes away - Indoor go-karts
Cincinnati Zoo - 27 minutes away - 75 acre zoo with nearly 2,000 animals
Accompanying Cincinnati Zoo are all the basic city activities - football and baseball stadiums, movie theaters, etc. Right across the river is the Newport Aquarium, which is also exciting.