The birthplace of the Big Boy Steam Dream

Welcome to RailGiants Train Museum

Birthplace of the Big Boy Steam Dream, and home to the RailGiants of Southern California’s premier railroads!
A stylized logo for Rail Giants with a Train.

RailGiants Train Museum at the Los Angeles County Fairgrounds in Pomona, California is a historical journey back to the glory days of the American Railroad.

Our Museum houses some of the country’s most well preserved Locomotives, which includes several sole survivors of their respective classes. Our RailGiants collection contains two of the four surviving 3-Cylinder steam locomotives; SP #5021 and UP #9000. The largest diesel locomotive, a Union Pacific “Centennial” is also here. In addition to our locomotives we have various pieces of Rolling Stock (freight and passenger cars), our historic Arcadia Depot, Library Archives, and Gift Shop.

We are open free to the public during the second weekend of each month, except in September, from 10am to 5pm. Ample parking is available. During September, we are an exhibit inside the Los Angeles County Fair, which requires paid admission. Please check our Event Schedule.

Big Boy No. 4014 is Operational Under Steam Power

The Railway and Locomotive Historical Society, Southern California Chapter is excited that Union Pacific completed restoration of Big Boy steam locomotive No. 4014. Union Pacific and its steam crew partnered with many businesses and organizations to achieve this long shared Big Boy Steam Dream into reality for the world to experience. We are the organization that preserved and cared for Big Boy No. 4014 during its 52 years at RailGiants Train Museum after retirement. We returned Big Boy No. 4014 to Union Pacific so this famous locomotive could begin a second operational life. On May 4, 2019, Big Boy No. 4014 reclaimed its prior home on the rails between Ogden, Utah and Cheyenne, Wyoming. We look forward to Big Boy No. 4014 expanding its territory across more rails of the Union Pacific System. Our organization’s gift to steam locomotive fans provides a wider appreciation of major industrial manufacturing and steam technologies that helped build the modern United States.

Night Photo Shoot

Saturday Night, October 26th

Click here for information and reservations