Ohio Rev. Code Ann. § 5731.181
(B) A tax is hereby levied upon every generation-skipping transfer of property having a situs in this state, that occurs at the same time as, and as a result of, the death of an individual, in an amount equal to the credit allowed by Chapter 13 of subtitle B of the Internal Revenue Code, for any taxes paid to any state in respect of any property included in the generation-skipping transfer. For purposes of this division, "property having a situs in this state" includes all the following: