# Vienna Pre-metro

> system of tunnels used by Vienna's tram and tram-train lines

**Wikidata**: [Q2466230](https://www.wikidata.org/wiki/Q2466230)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Vienna_Underground_Tram)  
**Source**: https://4ort.xyz/entity/vienna-pre-metro