When my family took our great Western trip during the Bicentennial, one place we visited was Cody, Wyoming. We took in the nightly rodeo and other sights. However, the highlight was the visit to what was then called the Winchester Museum and the Buffalo Bill Museum. They have since been renamed to the Cody Firearms Museum within the Buffalo Bill Center of the West.
The Cody Firearms Museum has just undergone an extensive (and expensive) renovation. Ian McCollum of Forgotten Weapons visits and gives us a virtual tour. He notes in his description of the video that it is now, in his opinion, the best firearms museum in the US.