Avellaneda Park Historic Train, Heritage railway in Parque Nicolás Avellaneda, Buenos Aires, Argentina

The Avellaneda Park Historic Train runs on a circular track around the Olivera Mansion within Nicolás Avellaneda Park in Buenos Aires. The journey takes about 15 minutes and passes through green areas with trees and open spaces throughout the park grounds.

This railway started operations in 1936 after being relocated from the Buenos Aires Zoo, where it originally carried visitors to a nearby sports center. The move marked the start of its role as a recreational attraction within the park that has continued for decades.

The train, known as 'Expreso Alegría', serves as a gathering point where families experience the park together on their way around the mansion grounds. Visitors notice how the rides connect people to the park's recreational purpose, which remains central to how locals use this green space.

Rides operate on Saturdays for general visitors and Tuesdays for organized school groups, departing from Clemente Onelli station within the park. It helps to check ahead since operating hours can vary by season and special events.

The carriages no longer carry numbers: after the 2015 restoration they were renamed after well-known local historical figures chosen by neighbourhood residents. The line's signals, workshop and terminal station were repaired in the same project.