The Rome–Fiuggi railway is a former railway built on the east part of Rome, Italy. It consisted of a 78.1 kilometers long narrow gauge 950 mm line from Rome to Fiuggi.
Wikipedia https://en.wikipedia.org/wiki/Rome–Fiuggi–Alatri–Frosinone_railway
Address 27 Via Casilina, 00030, Italy
Coordinates 41°50'19.708" N 12°45'32.001" E