Cathedral of Causality

The Cathedral of Causality is the home of Deus Ex Machina and Muru Muru. It is depicted as a large domed building colored with a purple tint.

And is also called an Imaginary place, therefore can be entered by anyone who knows of it as done by Yuki and once by Minene Uryu.

It is also affected by changes in the Timeline as it was almost destroyed when Yuki changed the future by seeing the dead bodies in Yuno's House.