Boneyard

The Boneyard (Japanese: 裏の空き地 Vacant Land of the Back) is one of the few locations of Luigi's Mansion located outside of it in the game of the same name. It is first accessed and cleared in Area Two.

The area has a doghouse in which Spooky sleeps inside of. When Luigi approaches Spooky, it starts barking and chases him around the Boneyard. A Skeleton Ghost gets irritated by the noise and rises out from the ground. He must suck it inside of his Poltergust 3000 and afterward do the same to Spooky. After Luigi captures both of them, the Boneyard lights up.

There are sparkles inside of Spooky's doghouse. If Luigi investigates them with his Game Boy Horror, it summons a small gust of wind, which, if Luigi walks toward, sucks him into the Graveyard.

The Boneyard also has a patch of dirt with a large bean in it. If Luigi waters it, the bean sprouts into a small plant. After Luigi captures Bogmire, the bean grows and produces a bud. If Luigi waters it again, the bud grows and blooms into a gigantic flower. When he defeats Boolossus, the flower becomes a seed pod. Luigi may then water it a final time to make it open, revealing the rare Gold Diamond. With it are 2 Gold Bars, 20 Bills, and 30 Coins. If Luigi does not water the flower after defeating either boss, the plant withers and dies.

Three Temper Terrors and a Water Elemental Ghost are in the Boneyard during the mansion blackout.