Films Similar?

I am a horror afficiando and I love Fulci's Gates of Hell trilogy, and this particular entry has a special spot in my heart. I also am looking for films similar to it. Messiah of Evil is another film that shares many similarities and I love it as well. I really enjoy the nightmarish atmosphere and the non-linear plot. Anyone have any other films similar to this, The Beyond, House by the Cemetery and Messiah of Evil?