Downtown Tempe Lakes, AZ at night. Used a Canon 5DMKIII with Canon 17mm TSE, Hitech 5 stop ND Pro IRND Glass filter. ISO 100, HD (2 frames) I used NIK to combine the photos. First photo was 137 second exposure, 2nd was 294 second exposure.
I then used PS, with Light Masks, Adobe Camera Raw and PS's convert to B/W to process the image. (I will try Nik's convert to B/W next time)