In this picture you are seeing a metro station in Vienna/Austria Late at night.
The lighting and the structures looked a little bit like a butterfly to me.

I used my Canon 5D mkIII with with a 17-35mm lens to capture this image.

Model Canon 5D mkIII
Shutter Speed 1/250 s
F-Stop f/2.8
ISO 2000

Lens Model Sigma 17-35mm f/2.8
Focal Length 17 mm

Thank you for reading and stay tuned for more images.