or At Least Some of the Nicknames for Ohio Cities
Dayton – Gem City
Cincinnati – Queen City
Cleveland – Forest City (among many other ones)
Toledo – Glass City
somewhere on this page http://en.wikipedia.org/wiki/Toledo,_Ohio
Sandusky – Roller Coaster Capital of the World
I think it is pretty obvious with Cedar Point there.
Valley City – Frog Jump Capital of Ohio
For the frog jump contest they hold.
I am sure residents of each city have their own heartfelt nicknames and some cities have many nicknames.