You mean the maze where you can make endless rounds, from one room with armoured skeletons (or something) that appear to the other room etc etc ...?
If you mean this: have a look at your "map" and discover that there're two "hidden" rooms" you must try to find and unlock them via pressing a buttom nearby both hidden rooms on the wall.
Go in both hidden rooms and activate there something, I think a "lever" it is.
PS (edit) :
... do you mean Maxos Temple
or Lovis Tower
Two different locations !