# Quadrilatero

> defensive system of the Austrian Empire

**Wikidata**: [Q280545](https://www.wikidata.org/wiki/Q280545)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Quadrilatero)  
**Source**: https://4ort.xyz/entity/quadrilatero


## References

1. Freebase Data Dumps. 2013