Atlantis

 is a limited-time premium building that was released on August 20, 2018, as part of the Moe's Ark 2018 Event. Upon completion, the quest Atlantis starts.

Jobs Involved
Milhouse
 * Look For a Wife - 8h

Milhouse
 * Fail to Find a Bride in Atlantis - 4h

Trivia

 * Only one can be obtained.