[1] In 1971 the Northamptonshire County Council opened the Irchester Country Park, which is located on the site of the former opencast ironstone quarries.
The park has a network of walks, a visitors centre and a children's play area in a grass and woodland setting.
The museum was set-up within the park in 1987, inside a purpose built building to the west of the original ironstone railway maintenance yard.
Access to the museum is along a footpath which follows the line of the ironstone railway trackbed.
A 250-metre long demonstration track with a gauge of 1,000 mm (3 ft 3+3⁄8 in) has been laid in the park.