I. Love. This. Card.
When we draw The Tower in other decks, we usually are given an image of a crumbling tower, sometimes with flames seen shooting from parts of it.
There's a tower in this image, too. But I don't see that it's been harmed. This card goes beyond the customary damage and destruction of a formerly solid construct (something easy to read from a mundane interpretation as well) and takes us into the depths of our minds.
What I see are the two gargoyles - one whose throat has been pierced by a lightning bolt. . .which has gone on to zap the other one on the top of his head.
A sudden flash of illumination. Unspeakable revelations. (He's trying to scream - haven't you had those nightmares?)
In a flash, you can see what's been hidden in the dark. If you watch long enough, there will be another brief flash in the storm - if you are brave enough to open your eyes again.
And what will you do about what you see?