I don’t know much about this place, apart from that it looks pretty outlandish and cool. So I’ll leave it up to you to ask Google about the details. It’s a monument to Communism up on a mountain near where socialists used to meet in secret in 1891 to form an organized socialist movement. It was opened in 1981 and there are some pictures showing how glorious it once was.
Now it’s no longer looked after by government and is boarded up and decaying. But there is a hole in the side that you can climb into and have a nosy around the building 🙂