From PNC Park, one can see a billboard-sized sign atop a Downtown building. This sign is illuminated with a triangular pattern. What the heck is it? | You Had to Ask | Pittsburgh | Pittsburgh City Paper

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From PNC Park, one can see a billboard-sized sign atop a Downtown building. This sign is illuminated with a triangular pattern. What the heck is it?

Question submitted by: Dave Horstmann

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