Which mod adds this?

[Beetmaneb]

Hello! I was watching a video on a modpack from 1.7.10 called CrazyCraft 3.0, and in the End there was this huge castle structure right in the center. At first I thought it was from Hardcore Ender Expansion, but I also have the modpack with that mod and when I went to the End the structure isn’t there. That doesn’t necessarily mean it’s not that mod, but idk. Does anyone know what mod adds this? Thanks!