Sad to see that abandoned buildings. I also have nany examples in Hungary, but first, I have to find the photos in my archives. Other examples: sports facility buildings that built up for the Olympic Games, then abandoned some years later, like in Greece or Russia.
There is an article in Hungarian, the pictures tell all about that: https://olimpia2016.24.hu/olimpiai-hirek/2016/08/06/elhagyatott-olimpiai-helyszinek-a-nagyvilagbol/