The Columbia River Highway Scenic Byway runs from Troutdale to The Dalles in Oregon. Multnomah Falls, one of several waterfalls located along the route, is among the most beautiful in the world.

Situated along the westernmost end of the Historic Columbia River Highway — the U.S.' oldest scenic route with stunning ... by picking up a McMenamins Passport, where you can collect stamps ...

The result is the Historic Columbia River Highway Scenic Byway, which begins east of Portland, Oregon, and runs up the Columbia River Gorge at the base of Mount Hood, an active stratovolcano.