Last weekend I went on a camping trip with a bunch of men from my church called "Man Camp". We stayed at Tumalo State Park in Bend, OR. On one of the days part of the group went for a hike to Tumalo Falls. There are a bunch of waterfalls (duh) within a short hike. If you find yourself in Bend looking for something to do, I recommend a day hike at Tumalo Falls.
This was the view on the way back. The large waterfall is right below me.
If you're still looking for something to do, check out Smith Rock State Park in Terrebonne, OR. The hike is pretty intense - they actually call it Misery Trail - but the view is breath taking. That rock sticking up on the right is called "Monkey Face".
You can also watch people do crazy things like walk across a slack line with a 100 foot drop below them. Yes, they're tied in, but still. It does kind of look like he's running away from the Monkey's mouth.