The HTL IT departments moved to the main building some time ago. This is now the "Bildungscampus am Stadtpark". Also the road next to it is now a one-way road.  

Sources:
https://villach.at/stadt-erleben/news/bildungscampus-start-am-kommenden-montag
https://www.meinbezirk.at/villach/c-lokales/villacher-bildungscampus-am-stadtpark-startet-durch_a8068618
https://kaernten.orf.at/stories/3342201/
https://villach.at/stadt-erleben/news/neue-einbahn