Monster's Castle

The  is a limited-time premium building that was released on October 3, 2018, as part of the Treehouse of Horror XXIX Event. Upon completion, Frankenstein's Monster and Julienstein are unlocked.

Regular
Frankenstein's Monster
 * Unwind at Home - 60m
 * Use Power Tools - 8h
 * Write Gothic Poetry - 12h
 * Ignore Frankenstein's Calls - 24h

Julienstein
 * Laugh at Horror Movies - 60m
 * Make New Friends While Gardening - 4h
 * Piece Together Her Genealogy - 24h

Quest Based
Frankenstein's Monster
 * Plan Home Renovations - 4h
 * Admire His Work - 8h

Julienstein
 * Consider a Trial Separation - 8h
 * Forgive Her Monstrous Husband - 4h

Trivia

 * Only one can be obtained.
 * It can be placed on grass, pavement, dirt, krustyland road, boardwalk, pier, edge of boardwalk, or edge of pier.