- Lewis and Clark National Historical Park is a collection of state and U.S. federal lands near the mouth of the Columbia River, where the Lewis and Clark Expedition overwintered in 1805-06. The park contains sites on the Northern Oregon Coast near Astoria and Seaside, and the Southwest Washington Coast near Ilwaco and Long Beach.
- Southwest Washington (Wikivoyage)
Southwest Washington is a lush, forested region of Washington State. This part of the state is along north bank of the Columbia River, from where it carves a gorge through the Cascade Mountains, past the busy communities opposite of Portland, to its wide mouth at the Pacific Ocean. Its stretch of coastline features extensive sandy beaches as well as sheltered wetlands, and its interior is covered in evergreen forest punctuated with prominent volcanic peaks.