Santa's Winter Stronghold is one of the two Tundra Maps and is fairly large in size with a number of interesting locations.
Professional and Valley Enemies spawn here.
Hamilton, Rush and Madison may spawn here
Features
Outside
Castle
Frozen Lake
Drawbridge
A Mini-Boss spawnpoint is located here.
Inside
Bridges
Back Room
Obby Room
Santa's Desk
A Mana Well is located here.