Decoration? That's my guess. I don't see a functioning purpose for a steeple at the top of a lift hill, but they're pretty.
-Travis
www.youtube.com/TSVisits
If it did, it would've been much easier to just use a lightning rod (which most coasters have up there anyway).
Edit my completely uneducated guess would be to keep rain off something important up there.
Hobbes: "What's the point of attaching a number to everything you do?"
Calvin: "If your numbers go up, it means you're having more fun."
On a side note, it is my understanding that some coasters heights were advertised based on the height of the cupola rather than the track itself. It was an easy was to market a ride taller than it actually was.
884 Coasters, 34 States, 7 Countries
http://www.rollercoasterfreak.com My YouTube
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