Latour-de-Carol is one of the few stations in the world with three different gauges (another being Montreux railway station). However Montreux has a rack and pinion option. The line to Toulouse-Matabiau is 1,435 mm (4 ft 8 1⁄2 in) standard gauge; the line to Barcelona is 1,668 mm (5 ft 5 21⁄32 in) Iberian gauge; and the Cerdagne line to Villefranche-de-Conflent is 1,000 mm (3 ft 3 3⁄8 in) metre gauge. The three lines each have a different voltage supply: 1500 V DC (overhead France), 3000 V DC (overhead Spain), and 850 V DC (3rd Rail, Ligne de Cerdagne), respectively. The cumulation of three different gauges combined with three different electrification systems makes this station unique. Maps, photos and full report here.