Operating out of the former Portland Company Marine Complex, the organization was founded in 1993 and continues to operate as of 2024. The collection consists of passenger and freight equipment, as well as artifacts from the 2 ft (610 mm) narrow gauge railways that ran in the state of Maine in the late 19th century and early 20th century.[1]
The organization operates a 1+1⁄2-mile (2.4 km) long railroad that runs along the waterfront of Casco Bay and parallels Portland's Eastern Promenade. Historic steam and diesel locomotives and a variety of restored coaches are used to run passenger services on the railroad.[1]