Wandering through wikipedia's "pick a random article" category, I came across this article on the Severn bridge in Wales, which was apparently the source for the laser blasts in the movie Star Wars.

Not the article, but the bridge.

Then I got to thinking, which is always dangerous. I wondered if anyone else had thought to use bridges just to make sound. I imagine there are plenty of people who have, but my searching brought me to the home of Jodi Rose, who thinks the world could collapse, implode if you will, via resonations from bridges, large and small. She's made it her mission to bring about the world's downfall, apparently, through singing bridges.

Here are some of her bridge recordings. Scroll down past "latest news" to "Listen." I particularly like the ones from Maatinkaari, Helsinki (tracks 8 - 16), which sound a bit like laser fire, and the Brooklyn Bridge (track 25) 'cause it's the only one of these bridges I've been over.