The Webs

 is a limited time building that was released on October 3, 2018, as part of Act 1 of the Treehouse of Horror XXIX Event. It was the fourth prize to be won in the event's Act 1.

Trivia

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