Narrow-gauge railways in Portugal

A Série 9020 diesel locomotive at Livração station on the Tâmega line
Sernada do Vouga railway station on the Vouga line
A Série 9100 diesel railcar at Amarante station on the Tâmega line in 2002
A Série 9600 narrow-gauge diesel multiple-unit train at Guimarães station in 1996. The line was electrified and rebuilt as a 1668 mm gauge railway between 2002 and 2004.

Portugal formerly had several hundred kilometres of narrow-gauge railways, but by 2010 only two lines were still in operation – the Vouga line and the Metro de Mirandela. The lines were operated by Comboios de Portugal and maintained by REFER (or the predecessor CP).