^ So not actually a castle then, Mindfulness. Sorry to be pedantic but a castle is constructed for purposes of defense, which your photo clearly shows is not the case here. Just because some business magnate slaps the word "castle" on his architectural folly don't make it so imo!
There you go, I've written the opening sentence of your report for you!
^ But, yeah, it looks super-unusual and must've been a fascinating place to look around. I hope your report goes well.