Union Plaza is a three block development along Antelope Creek in Lincoln. This is urban flood control, but done aesthetically with native plants, a little ampitheatre and some playgrounds along a jogging/biking path. It is quite lovely - I much prefer it to just bringing in a bunch of boulders and lining a creek with them. It's obviously human-made, but it is aesthetically pleasing. If you are using the trail for recreation or to get around town, I'm sure this is a highlight.