I saw them only one time in my life, a few decades ago. I was leaving a band practice, and the drummer's sister and I were pretty blown away when we noticed it.

I saw them only one time in my life, a few decades ago. I was leaving a band practice, and the drummer's sister and I were pretty blown away when we noticed it. Well, that's an understatement, because you couldn't miss it. Every light that could be seen was at the base of a pillar. We didn't know why it was happening, but we were pretty impressed. Pictures do not give you the full experience, since there is a huge 3D element to how they appear, too.