Ice palace - The Kingdom of Tonophria in the north is beneath the ice. Accessible by tunnels and hidden passages going down, there is nothing but an expanse of ice reminicent of Antartica above. Possibly one of the most interesting Kingdoms in the saga.
Derinkuyu Underground City, Cappadocia region 18 miles from Nevsehir,Turkey. It is one of over 200 underground cities discovered in the region, but it is notable for being the biggest and the deepest. With 11 floors & depth of this ancient city can a