VarionusNW said
What if magic and mythical creatures really existed thousands of years ago? what if it all just vanished? what if it still existed in a separate world from ours?
Certainly an intriguing idea. Pick a specific set of myths like greek or roman; something that's quickly recognizable and easily adaptable. I'm guessing the major conflict in the RP comes from the collision of the ancient world and the modern? Or have these two worlds been melded for some time? How adapted are people to this change?
VarionusNW said
In this RP we will explore what would happen if the magic world and our world collided and molded together. Not just connecting our cities to theirs, but overlapping them, destroying countless buildings in a single catastrophic event that brings magic to the modern world.
Not sure how to do that. Looks like you've got a lot of worldbuilding to do. (as you mention below) I wouldn't worry to much about the buildings-what are the people like? Who uses magic? That seems to be the major conflict- you have modern people interacting with ancient gods and ideas. Define your magic rules. Would probably be easy once you pick what cultural myths your drawing inspiration from.