Oh, this is a wonderful building. I love the other famous museum building by Ödön Lechner, the building of the Museum of Applied Arts. (Unfortunately, now it is closed​ because they started its reconstruction.
Here you find a lot of photos about it:
http://kep-ter.blog.hu/2014/06/17/az_iparmuveszeti_muzeum

I loooove your drawings/paintings. You have a nice style.