Citadel

A really big respect for this one! still wondering how you make those kind a things, the shape etc, could you please gimme more info or even with a tutorial how i should be able to make things likely, ofcourse I wouldn't make the same, just wanna know how you make those shapes, please let me know!
(P.S, even though you tell me how to make the shapes, I would never use it for any commercial use!!)
greetings from The Netherlands