It's not amazing, sorry.
It's the worst piece of architecture I've ever seen in my life.
It was never occupied. They ran out of money and stopped all construction of it.
This building took up almost all of North Korea's money since its a state project, and they totally drained their entire economy making it(just like the soviets did with their horrible space shuttle program with buran).
Something happened and its going to be renovated and completed for some odd reason. I think it would be best if someone just took a few bombs and dropped it on it to make a sweet implosion.