There are at least two "Rock Creek Parks" in Hillsboro, but this is about the small one that's north of Highway 26, at the very north end of Rock Creek Trail. The park has a cute playscape that our children (ages 3 and 5) enjoyed. There's a small trail around the six-acre park, which is within easy walking distance of the Embassy Suites hotel, as well as two small basketball courts, a large grassy lawn, swingset, and picnic tables.
The primary downsides for me were two: (1) no restroom facilities or water fountains, both of which are necessities when taking my children to parks, and (2) no parking. Fortunately, we walked there from our hotel, so we didn't need parking, but walking isn't an option for everyone. There isn't a parking lot, nor even places along the street for cars to park. read more