Hello, while cleaning up this forum, I came to realize the topics here though short-listed were disorganized and a directory seems to be needed as members will continue to theorize upon the mysteries offered by our beloved series.
It is not complete as of yet and depending upon a few factors, this forum may grow slightly. The topics in the Department of Mysteries are as follows:

About Magic
Changing The Past, Possible or Impossible?
Creation Of Spells
Transfiguration And Defensive Magic
What If All Spells Were Just..., exploiting things in Muggle physics?
Yew Trees in HP

Department of Mysteries
A room in the DoM which holds something so powerful...
Brains in the Department of Mysteries?
Does Fudge know?
Room that Melted Harry's Knife
Seven Rooms, DoM reflecting the series?
The Baby Harry Saw In The Department Of Mysteries
The Creation Of The Mystery Department
The Dept of Mysteries in General-Pinned
The First Broken Glass Sphere In The DoM
The Room With All The Watches & Clocks
Was the DOM Inspired by Zork II?

Miscellaneous
Is the Whole Thing About Love and Death?
Where Is The International Ministry Of Magic?
Will the Potter Series Exceed the Seventh Book?

Prophecy Threads
The Prophecy: 'HP-LV' All General Discussion
The Prophecy Was About....
Voldemort & The Prophecy, How much does he know?

Veil Threads
How Did The Veil Get There In The 1st Place?
Is the Veil the Future?
The Question: What was Sirius's Fate?-Pinned
The Veil, In General-Pinned
What if Harry walks through the Veil?

The directory will be updated when topics are opened or changed about. Please do not discuss any topic in here if less there is a particular problem in the board. Posts will be DELETED, thanks.