I was thinking about rooftop mounted sirens, so I started this thread. I'm just curious, What roof-top mounted sirens have you guys ever seen?
I've heard of a Thunderbolt 1003 atop the US courts building in Atlanta, but the only one I've seen in person is a Thunderbolt Atop Birmingham City Hall
(siren is on the second building on the left side, left side of the building)
EDIT: Here are some close-ups of city hall, you may be able to see the siren more clearly.
EDIT 2: I just remembered another rooftop mounted siren, the FS Modulator 4016 atop of building C at the Gwinnett Technical College