Lewis and Clark slept hereWell, in something a lot like it.
This is a replica of the keelboat they travelled in. It is found at the Lewis and Clark Museum in Hartford, IL, a few hundred yards or so from the site of Camp Dubois at the confluence of the Missouri and Mississippi Rivers. The museum is very new, shiny and clean, lots of interactive materials and full of light. The other side of the keelboat is cut away so you can see what the inside would have looked like.