I went to the Woodland Park Zoo Lights recently. It was really awesome. They did a great job with the lights this year. They had a lot of decorative pieces, and they had lights all along the walk ways too. So it was a lot of things to look at, and even traversing from one section to another was fun. Great job!
They had a lot of great light sculptures, but my favorite of the bunch were the lights on the trees. :-) There was a giant line to get in, and I spent a lot of time watching the lights change colors from red, orange, yellow, blue, green, and purple (or violet if you're so inclined). This image is a blend of all of those colors.