Camelot: Perhaps the most mentioned mythical place, the city capital of Arthurian legends is the middle age version of the paradise. Here all that is good, righteous and true is considered natural and the truth and valor prevail no matter what.
Avalon Camelot King Arthur: The Sword in the Stone. The technology of sword making required knowledge of pouring iron into a stone mold. It was passed between tribes and eventually the story took on the image we see today.