Vague predictions of the future and lead one to adventure.
Saints and Sainthood: The inside story on the ascended
“Dreams are the only reality” suggests some of the ancient manuscripts. Dreams and the dreamers often reveal secrets long forgotten, or dreams can hide the truth only to make it resurface decades or even centuries later
You come upon a ruined building in the back section of a city park (or other out of the way area of the city). The ruins are fairly overgrown. All that is really standing is a doorway and its frame. If you pass through the opened door, you travel to a different world. If the door closes, there may not be a doorway back to get you back.