At the time that I took this back on October 23, 2011, my best technique was to use a couple of free Photoshop actions called Touch of Light and Touch of Darkness.
Here's the reworked version:
One might accuse me of using a little too much sharpness in this, but you're really only getting a High Pass filter combined with an Overlay transparency mode.
I went back a few years again and dug up an article, "Pulling Dreamscapes via Orton Effect" that I had more or less forgotten about. This bridge shot was a good candidate for trying that effect: