I remember years ago they were doing repairs in one part of the 'new' station, and they had taken down a wall, and you could see bricks and such from the original walls that had been covered (the old walls were partially knocked down in the demo, I guess, then covered)
It is funny, when it said remnants of Penn Station tour, I kind of envisioned what you see in articles, going to places like the Meadowland swamps or where people took demolished pieces and had them at their houses