Besides Berea, I like to go to downtown Cleveland by the Amtrak station, there is a pedestrian bridge over the NS lines which allows good photo ops. The two main lines are the LakeFront Line going to Buffalo, and the other is the line going through Alliance Ohio. Definately check out Berea though, I was these last Friday from 12:30 PM until 5:00 PM and counted 15 trains between NS and CSX, CSX runs alot of foreign and leased power, also from time to time I see new BNSF and UP units on CSX which I assume are coming from Erie PA. I also see lots of old freight cars, I saw several painted in Erie Lackawanna.