Castle Acorn

Castle Acorn was the primary hub of the Kingdom of Acorn and home of the Acorn Monarchy. Located originally in Mobotropolis, a new castle was established in Knothole after the city fell to Dr. Ivo Robotnik and King Max was returned to Mobius Prime. However, that castle was destroyed during Dr. Eggman's attack and destruction of Knothole. Following this, a new Castle Acorn was created via nanites in the city of New Mobotropolis by NICOLE. (StH: #43, #70, #175, #176)