Very large, though perhaps not by comparison to this one - I haven't seen any maps - and built upon magic. It's ruled by King Touchstone and his Queen, Sabriel, who is also the Abhorsen. I'm her half-sister, and the Abhorsen-in-Waiting. They took the throne at a time when the Charter had been broken and the Dead and the necromancers were making the kingdom very dangerous, but they successfully restored the Great Stones, and the Old Kingdom has been very safe under their rule. Until
There is a place over the Wall that is more like this one, a land called Ancelstierre. It lacks magic and has similar technology and electricity that this place does. I was only there very briefly, not long enough to grow accustomed to it, but I've grown more used to it here.