Come down to hell, this is the inspiration...
and the stairs is the principal subjects, start with the creation of a portion of stairs, and with copy and paste and a 15° rotation we can make the spiral...

Eyes material become from Poser, in the color tab you dont make anything... all is just right...
 

The First league 3d software (and very expensive 3d software) like cinema 4d, 3dMax and Maya can do incredible results, this little tutorial, starting from an original idea of Pmermino, sugget a simple way to fix the "quality" problem of "not so soft" shadow in Vue...

All models are made by me, all maps included are made by me or are downloaded as free stuff from websiste around the net.