There are a lot of sights to see in Oregon. One of the more interesting places I've been was this day trip in July 2012 to see Bonneville Dam in the Columbia River Gorge.
A few facts are that the dam is 197 feet (60 meters) in height and 2,690 feet (820 meters) in length.
The dam is used for generating electricity and also there are locks for ships and boats to navigate the Columbia River.
It's a series of a lock and dams with two powerhouses and a spillway that stretch from the Oregon river side to Washington State's side of the river. It was very impressive to see not just the facilities but also the natural beauty of the Columbia River Gorge.
In the middle of the river is Bradford Island where there are various things to see around the grounds like petrified wood.
Various native plants grow in many places like these blooming yucca.
Along with wildflowers.
Interesting plants are part of the landscaping around the visitor center like this leatherleaf viburnum.
As for the Bradford Island Visitor Center I do recommend going in it. Besides exhibits inside you can see where they count the various fish swimming through the fishway along with seeing the fish yourself.
You can also go outside to view the top of the fishway.
I didn't catch any fish jumping that day.
This was a nice and interesting place to visit. It's located about 40 miles upstream from Portland so it made a nice day trip. The website for the Bonneville Dam and Lock is here if you want more information.