Asgard

.....Oh Asgard where Gods dwell
As the ancient Sagas tell
Bifrost cross may those who die
Where Valkyries fly......
(Rebellion)
What can I say! I just love Norsemen these days and I know more about their religion than about my own! xD And, of course, I got all my knowledge from the songs of my favourite heavy metal bands!

And, a quick description, the fancy castle is Asgard. Odin manages it. His hall is in there, it's called Valhalla. The girl on the horse is a Valkyrie and she carries the valiant dead from the battlefield to Valhalla, where they'll be a part of Odin's army to fight aside him when Ragnarök may come. .. But everyone knows that, I guess.
Hail to the Vikings! I hope you like the drawing!