Reflected light

I was fascinated by the light hitting this government building downtown Omaha, Nebraska. It was after 5 pm, the sun was slowly getting ready to set, and I could see it behind this building. I stopped, and looked around to see, what is happening. And then I understood- the light was reflecting in the glass skyscraper across the street, behind me, and hitting this building. It created this play of light and shadows, very mysterious and warm. It’s like you were watching it through a grid of some sort.