It was indeed built within 27 years: https://infrastruktur.oebb.at/en/projects-for-austria/railway-lines/southern-line-vienna-villach/koralm-railway/about-the-

It was indeed built within 27 years: https://infrastruktur.oebb.at/en/projects-for-austria/railway-lines/southern-line-vienna-villach/koralm-railway/about-the-project https://infrastruktur.oebb.at/en/projects-for-austria/railwa...