White River Falls State Park, Oregon
White River Falls State Park is a pretty and seldom visited park about two hours drive from Portland. The park is situated just up stream of where the White river joins the Deschutes river. It's a short hike through a lovely canyon from the parking area to where the two rivers meet. The center piece of the park is a 90 foot water fall which can be seen from a view point on the canyon rim and from the trail to the Deschutes river along the canyon floor. My favorite thing about the park is the abandoned hydroelectric plant at the base of the waterfall. The plant was built in 1910 and was used until 1960. The plant had been open to explore until recently. The last time I visited the eastern, exposed side of the plant had been boarded up and "Do not enter" signs had been posted. It's easy to circumvent this by climbing around to the other side of the building. I suspect that the parks department might secure the building more thoroughly sometime in the near future. The park is closed in the winter. Check the park website for current status.