Week 3 and we finally get a little bit of the "How?"
The Factory and Bunker sticking around are understandable; if they were created by creations, causally they should still be around even after the Seed and its creations are gone.

Being inquisitive by nature I like getting the answers, but to come in the form of what amounts to Tweets is just a little disappointing. Not a big deal, but it is what it is. Better question is "How did Konogg find this out?" if you ask me. (But we'll never know. It will forever remain a mystery, just like random animals carrying 148 gil and a magic fire ring.)