Fort Clatsop National Memorial Located in Astoria, OR TRAVEL BASICS - CAMPING - LODGING ACTIVITIES - FACILITIES - FEES/PERMITS Fort Clatsop Replica (NPS Photo) IN BRIEF This site comemorates the 1805-06 winter encampment of the 33-member Lewis and Clark Expedition. A 1955 community-built replica of the explorers' 50'x50' Fort Clatsop is the focus of this 125-acre park. The fort, historic canoe ...