When talking about vital yet much-delayed infrastructure projects, one can’t help but think about the now-infamous Berlin-Brandenburg Airport.
https://www.themayor.eu/en/thessaloniki-subway-system-to-be-completed-by-2023
origin - https://www.pipiscrew.com/2020/06/thessaloniki-subway-system-to-be-completed-by-2023/ thessaloniki-subway-system-to-be-completed-by-2023