Geriatric Park Dome

The  is a limited-time premium building that was released on October 6, 2021, as part of Act 1 of the Treehouse of Horror XXXII Event. Upon completion, Grampasaurus is unlocked.

Regular
Geriatric Park Burns Grampasaurus Ned
 * Eat for Free at the Snack Bar - 60m
 * Pose for Publicity Photos - 8h
 * Wish He Had Longer Arms - 60m
 * Take a Long Cretaceous Nap - 24h
 * Hand Out Creationist Literature - 6h

Quest Based
Bart Geriatric Park Burns Character Groups
 * Convince Punks to Hang at Geriatric Park - 4h
 * Display His New Exhibits - 4h
 * Display Delinquents - 4h
 * Unveil Lackey Park Exhibit - 4h

Delinquents Lackeys Rich People
 * Hang Out at Geriatric Park - 4h
 * Endure Public Humiliation - 4h
 * Enjoy Lackey Park - 4h

Event's Quest Based
Bionaut Marge Chalmers Dr. Hibbert Geriatric Park Burns Grampa Grampasaurus Hank Scorpio Homer Kang Kodos Lisa Mad Dr. Hibbert Marge Ned Panther Marge Professor Frink Quimby Sentient Lard Lad Statue Sideshow Mel Smithers Wiggum Character Groups
 * Navigate to the Brain - 4h
 * Demand a Military Response - 4h
 * Propose Using Mad Science - 4h
 * Reveal Hybrids - 2h
 * Train Hybrids for Combat - 4h
 * Unveil Geriatric Park - 4h
 * Reveal Human-Dinosaur Hybrids - 2h
 * Marvel at His Lab's Work - 2h
 * Agree to Allow "Free" Resort Stays - 4h
 * Be Confused If He's a Dinosaur Now - 2h
 * Demand Dinosaur Him Be Killed - 2h
 * Start a Dinosaur Rampage - 4h
 * Chase Monster Trucks Out of Town - 2h
 * Recruit Giant Signs - 2h
 * Become Compliant - 4h
 * Help Bring Advertising Signs to Life - 4h
 * Run From Dinosaurs - 4h
 * Wish He Had a Monster Truck - 2h
 * Chant "USA! USA!" - 4h
 * Encourage Walrus Homer - 4h
 * Chant "LASERS! LASERS!" - 2h
 * Be Disappointed the Dinos Won't Be Zapped - 4h
 * Be Scared Giant Signs Have Joined Dinosaurs - 2h
 * Get Lost Inside Grampasaurus - 4h
 * Try to Settle Kodos Down - 4h
 * Be Deeply Offended - 4h
 * Make an Argument Against Mad Science - 4h
 * Question the Morality - 2h
 * Make a Plea for Compassionate Science - 2h
 * Be Surprised Anyone Is Surprised - 2h
 * Inject Serum Into Grampasaurus' Brain - 4h
 * Object to Political Hypocrisy - 4h
 * Propose Using Mad Science - 4h
 * Reveal Hybrids - 2h
 * Train Hybrids for Combat - 4h
 * Grumble at Panther Marge - 4h
 * Discover the Truth About Geriatric Park - 2h
 * Flirt With Homer - 4h
 * Present Grampasaurus - 2h
 * Wonder How He Didn't See This Coming - 4h
 * Suggest Lasers - 2h
 * Bring Advertising Signs to Life - 4h
 * Be Surprised - 2h
 * Activate Shrinking Ray - 4h
 * Unleash the Springfield Militia - 2h
 * Concede to Chalmers' Demands - 4h
 * Pay for Resort Stays With Taxes - 4h
 * Agree to Fight Dinos - 4h
 * Switch Sides and Rampage - 2h
 * Dramatically Rev His Engine - 2h
 * Invite the Elderly to Stay - 4h
 * Try to Arrest Dinosaurs - 4h

Adults Elderly Simpsons Springfielders
 * Fret Over What to Do Next - 4h
 * Visit Geriatric Park - 4h
 * Get Bussed Back to Their Homes - 4h
 * Get Shrunk - 4h
 * Complain About Their Animal Counterparts - 2h
 * Enjoy the Resort - 4h

Limited Time
Bart Grampa Grampasaurus Homer Lisa Mecha-Chalmers Mr. Burns Panther Marge Professor Frink Skinner Smithers
 * Donate DNA - 4h
 * Donate DNA - 4h
 * Extract DNA - 4h
 * Donate DNA - 4h
 * Donate DNA - 4h
 * Extract DNA - 4h
 * Donate DNA - 4h
 * Extract DNA - 4h
 * Donate DNA - 4h
 * Donate DNA - 4h
 * Donate DNA - 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.