The National Railroad Museum holds one of the most impressive collections of rolling stock in the United States — about 75 pieces of equipment spanning the history of American railroading, from 19th-century steam locomotives to Eisenhower's World War II command train. The Big Boy, the largest steam locomotive ever built, is the headline exhibit, and visitors can tour several of the cars including the presidential sleeping car.
The museum is on the east side of Green Bay, across the Fox River from downtown. It offers train rides on a short loop around the property during summer months, and the indoor exhibits cover railroad history with a particular focus on the steam era. It takes two to three hours to do it properly.