Barad-Dûr, The Dark Tower

"Then at last his gaze was held: wall upon wall, battlement upon battlement, black tower of adamant, he saw it: Barad-dûr, Fortress of Sauron. All hope left him."

 J.R.R. Tolkien, Fellowship of the Ring

This model is heavily inspired by the original Weta model used in the movies, but by no means exact copy but simplified version that can be printed (in multiple parts) without any supports on FDM printer that also features lighting solutions for the lava and the eye.

I have printed this in 2 different scales, smaller one is harder to wire for lights but very possible, larger and default size is a long print but works much better in my opinion.