The 12 sites that make up Lewis and Clark National Historical Park are in the states of Oregon and Washington. By visiting these sites, you'll learn more about the Corps of Discovery's final days before coming to the Pacific Ocean, and the dreadful winter they spent at Fort Clatsop. You'll also gain a new appreciation for the extent of the help they received from the local Clatsop and Chinook people. The major sites to visit in the park include the Lewis and Clark National Historical Park Interpretive Center in Cape Disappointment State Park near Ilwaco, Washington, and the Fort Clatsop Visitor Center near Astoria, Oregon. These sites are a must-see for anyone interested in the Lewis and Clark Expedition, or history in general. This gallery of pictures provide a sampling of what you will see and experience on a visit to Lewis and Clark National Historical Park.