SPOILERS- The next paragraph contains information relevant to the story. Specifically, the ending.
The Crimson King once conspired to topple the Tower and bring an end to all existence, but his plan was thwarted by Roland Deschain and Patrick Danville. The interior of the Tower is infinitely larger than its exterior, including a spiral staircase that passes rooms, each of which contains a scene from Roland's life. The uppermost door bears the inscription ROLAND, and passing through that door leads the gunslinger ever back into his own past, during his flight across the Mohaine Desert, to repeat the cycle of his quest once more.
- The Dark Tower
- Insomnia (A young Patrick Danville draws a picture with crayons of Roland Deshain standing in rose field of the Dark Tower)
- Low Men In Yellow Coats (the first part of King's novel Hearts In Atlantis)
- The Little Sisters of Eluria (Prequel to The Dark Tower I-The Gunslinger. Although the Tower is not a part of the story, focusing on Roland trying to pick up Walter's trail. The Little Sisters do have a red rose embroidered on their habits, over their hearts.
- Ur - Although the Tower is not directly a part of the story, a picture of it appears on Wesley's Kindle, and the low men in yellow coats make an appearance at the end of the story, in which they reference both the tower and the rose.