Willow Creek Nature Park Complex
From the intersection of Waterhouse Avenue and 158th Avenue westward all the way to 173rd Avenue there is a series of parks united by a single trail. Much of the trail is on elevated walkway due to high water in the wet season.
Many of the elevated walkways are a somewhat creative design that puts one of the railings quite low so that it functions as a long bench along one side of the walkway. There are a few scattered traditional benches as well.
From east to west, these parks are: Willow Creek Nature Park, the very north end of Waterhouse Powerline Park, Willow Creek Park, Winthrop Park, and Appolo Ridge Park. At least, according to one map I have that is what they are called. Looking at the signs in the parks, there are some that are completely unmarked, while the far west end of the trail at 173rd is called "Winthrop Bike Path at Willow Creek Nature Park" on the sign at its entrance.
No matter what they are called, the parks are a nice addition to an otherwise bland suburban area, and it is wonderful to have this small wilderness preserve in the area.
However, the parks have little to interest those who are looking for good tourist attractions. It is a good diversion for a time, and maybe you will see some of the rather shy birds that live here - though even those tend to be fairly common backyard types. It is a nice diversion for those looking for a walk, but if you are really interested in taking a walk through a suburban wildlife preserve you are better off visiting the Tualatin Hills Nature Center.
Through Waterhouse Powerline Park the paved path also connects to Waterhouse Park and eventually the Waterhouse Rose Garden, but those are more cultivated type parks.