Cascadia State Park 
Cascade Drive, off of US-20
Cascadia, OR 97329
800-551-6949
http://www.oregonstateparks.org/park_210.php
State Park: Birding, Camp, Fish, Hike, Picnic, Walk, Water Sports
The first thing that strikes you when you arrive at Cascadia is the tranquility. While the park is quite large, there are barely two dozen campsites, making this a great spot for an intimate getaway.