I bumped the tripod while doing a long exposure shot... then decided to have fun with it.  Swirling the camera, and pushed vibrance/saturation WAY up in Lightroom.  Originally was a shot of the Chicago River.

 

Images captured with a Panasonic Lumix LX7 with long exposure using the built-in ND filter. 

 

30 second exposure, f7.1, ISO 80 - hi-res here