However, the museum has branched out over the years, acquiring some pieces that are not directly related to Pennsylvania, but are important to the history of railroading.

The museum offers a number of other attractions, including several model railroad layouts, a hands-on educational center, and a library and archives.

This includes Rolling Stock Hall, a second-floor changing-exhibit gallery, an observation bridge, a hands-on education center called Stewart Junction, an extensive library and archives, a restoration and paint shop, and an outdoor storage and display yard.

The original building was roughly 45,000 square feet in size and included an observation bridge leading across Rolling Stock Hall, allowing visitors to see the trains from above.

[2] For the 1939-1940 New York World's Fair, the Pennsylvania Railroad displayed a number of historic locomotives and cars it had collected over the years.

As the museum acquired more equipment, they required more space, so in 1995, Rolling Stock Hall was expanded by 55,000 square feet.

The official steam locomotive of the Commonwealth of Pennsylvania, PRR 3750, famous for pulling President Warren Harding's funeral train, is on display outside of the museum.

[4] In August 2023 the 185-year-old Rocket was removed from its prior home, the Franklin Institute, to be renovated for display at the museum.

[4] The Solari board that displayed train departure times in Philadelphia's 30th Street Station is in the museum's collection.

[6] A book available in the gift shop, The Haunted Railroad Museum of Pennsylvania, reveals that apparitions may be associated with some older items of equipment.