Expedition by State
Browse National Register properties associated with the Lewis and Clark Expedition by the states in which they are located. Please note that states are listed alphabetically.
Idaho/Montana: Lemhi Pass
The Corps of Discovery reached the Lemhi Pass on August 12, 1805
Idaho/Montana: Lolo Trail
The Corps of Discovery reached the 200-mile trail in mid-September 1805
Idaho: Weippe Prairie
After traversing the Lolo Trail, the Corps of Discovery descended to the Weippe Prairie between September 20-22, 1805
Idaho/Montana: Nez Perce NHP
In late September 1805 the Corps of Discovery made contact with the Nez Perce, who prepared them for the next leg of their journey
Illinois: Fort Massac
The Corps of Discovery arrived at Fort Massac on November 11, 1803, staying only two days
Illinois: Old Cahokia Courthouse
Lewis & Clark used the courthouse as their headquarters from December 1803 to the spring of 1804
Indiana: Old Clarksville Site
William Clark and two recruits for the Corps of Discovery stayed at the elder Clark's cabin in mid-October, 1803
Iowa: Sergeant Floyd Monument
On August 20, 1804 Sergeant Charles Floyd passed away due to complications from appendicitis. He was the only member of the Corps to die
Kentucky: Big Bone Lick
In October of 1803, Meriwether Lewis visited Big Bone Lick, sending specimens back to Thomas Jefferson
Missouri: Jefferson Expansion Monument
Learn about the important role that St. Louis played in the Lewis and Clark's Expedition
Missouri: St. Charles Historic District
On May 14, 1804 Clark and 42 men docked there and would remain for 6 days while waiting for Lewis to complete business in St. Louis
Missouri: Tavern Cave
On May 23, 1804, two days after leaving St. Charles, the Lewis and Clark Expedition visited Tavern Cave
Missouri: Rocheport Historic District
On June 7, 1804, the Lewis and Clark Expedition passed through the area of modern day Rocheport, Missouri
Missouri: Arrow Rock
Arrow Rock was notable in the journeys that opened the West, beginning with the Lewis and Clark Expedition on June 9, 1804
Montana: Slaughter River
The Corps camped at Slaughter River on May 29, 1805, where they discovered the remains of over 100 bison
Montana: Great Falls Portage
On June 13, 1805, the Great Falls Portage presented the Corps with one of the most challenging ordeals of the Expedition
Montana: Tower Rock
Tower rock marked the transition from the familiarity of the Great Plains to the unknown terrain of the Rockies
Montana: Three Forks of the Missouri
The Corps of Discovery reached the Three Forks of the Missouri on July 25, 1805 - more than 2,500 miles from where they started
Montana: Beaverhead Rock
On August 8, 1805 Sacagawea recognized Beaverhead Rock - where she had been kidnapped years earlier
Montana: Clark's Lookout
On August 13, 1805, Clark ascended a limestone outcropping, now known as Clark's Lookout
Montanta: Travelers' Rest
Unable to find a water route to the Pacific, the Corps paused here for two days in early September 1805
Montana: Pompey's Pillar
On their return trip, the Corps of Discovery stopped at Pompey's Pillar on July 25, 1806
Montana: Camp Disappointment
Lewis, George Drouillard and Joseph and Reubin Field stayed at Camp Disappointment from July 22 - 26, 1806
Montana: Two Medicine Site
In late July 1806 Corps members met eight Piegans (Blackfeet). It would result in the only violent encounter of the Expedition
Nebraska: Leary Site
On July 12, 1804, William Clark visited the Leary Site - burial mounds believed to have been constructed by the Oneota people
Nebraska: Fort Atkinson
On July 30, 1804, the Corps set up camp in an area that would become the first formal meeting between the US and western tribes
North Dakota: Knife River Indian Village
The Corps of Discovery spent the Winter of 1804/05 at the Knife River Indian Villages, where they recruited Sacagawea
North Dakota: Big Hidatsa Village Site
The Corps of Discovery constructed Fort Mandan just south of the village site, where they spent the winter of 1804/05
North Dakota: Fort Union Trading Post
In late April 1805 the Corps set up camp near present-day Fort Union, near the confluence of the Yellowstone and Missouri rivers
Oregon: Rock Fort Campsite
On October 25, 1805, the Corps made camp in the bowl of a fort-like outcropping known as Rock Fort Campsite
Oregon: Fort Clatsop
After reaching the Pacific Ocean, the Corps built Fort Clatsop, where they stayed in the winter of 1805/06
Pennsylvania: Am. Philosophical Society
The American Philosophical Society was the destination for many of Lewis & Clark's journals, where they remain today
Tennessee: Grinder's Stand
On October 11, 1809, Meriwether Lewis stopped at Grinder's Stand along Old Natchez Trace on his way to Washington
South Dakota: Spirit Mound
On August 25, 1804, Lewis, Clark, and several of their men walked nine miles to Spirit Mound from their camp
Virginia: Monticello
Jefferson sent a letter to Congress in 1803 from Monticello. In this letter he asked for $2,500 to finance a trek to the Pacific Ocean
Washington: Cape Disappointment
On November 15, 1805 most members arrived at Cape Disappointment, where they saw the Pacific Ocean
Washington: Chinook Point
On November 15, 1805, after a year and a half of traveling west, the Corps finally saw the Pacific Ocean near Chinook Point
Washington: Travois Road
On their return in May of 1806, the Corps of Discovery entered the foothills of the Blue Mountains, near Travois Road
West Virginia: Harpers Ferry
Learn why Meriwether Lewis spent over a month in Harpers Ferry, and how the town contributed to the Expedition
Last updated: December 15, 2022