Penis bridge

I got this image sent to me as an email and just loved it, so I had to share. So, by the time you cross this bridge are you subliminally horny?
Who knows if it's true or not but the ironic part is that the email stated was that the bridge is at Saint Peter's Basilica. I don't feel like fact checking, but it would be extra funny if it was the truth.
I think design is a trifoil right? Anyways, I wonder if the architect knew that this would occur during certain lighting of the day? Hmmmmmm.