Duchy of Lantern Waste

Creation
Lantern waste, inside the wardrobe, is where all of the adventures of the Sons of Adam and Daughters of Eve began. The lantern itself was created at the beginning of Narnia when Jadis threw a piece of a lamp post (from London) at Aslan, it fell onto the new Narnian soil, and it grew into a lamp post.

Trivia
Edmund Pevensie is actually Duke of Lantern Waste. Lantern Waste is the location of Mr. Tumnus's cave and he was on his way home with some parcels when he first met Lucy Pevensie there. Lantern Waste was also the home of The Tree of Protection which was planted by Digory Kirke to keep Jadis out of Narnia after its creation.