On Untapped Cities, Julia Vitullo-Martin has posted some remarkable interior photos of the Domino Sugar refinery. And she talked with Two Trees developer Jed Walentas about some of the challenges he’ll face transforming the empty industrial site into his vision for a residential and office complex. One of the real challenges will be converting the main brick building. She writes: “For one thing, it has no real floors and no real internal structure, but is instead ‘just a weird labyrinthine of equipment, much of which is completely integrated with the structure of the building,’ says Walentas. Massively big equipment will have to be removed and new space constructed within the empty shell of the building.” See a picture of some of that equipment after the jump and lots more on the Untapped Cities site.