I think the photo is too reliant on the picture to hold it into the challenge rule of "Take your best photo representing one of these signs".
I can see what it does represent but it needs the title to explain it. There is nothing wrong at all with thinking out of the ordinary but the picture should still stand alone.
As the window are on such a perfect line - it is a shame that the two iron flat - washers are asymetrical compared to the windows.
If the picture is cropped to the point of the top of the trhee glass pains - that distraction goes and the picture still retains its point.
I like the image and the angle but am missing the connection with the challenge, even having read the title several times. Hence, it fails in terms of conveying the theme to me.
Interesting take on gemini. Looking up at the building is kindof like looking up at the constellation. The composition is balanced, and the irregularities of the building make it interesting to look at. Lighting seems a bit flat.