The Galleria Diphteria is housed in a large, pink building. Some of its main features include a red carpet leading to the inside and two large lights. There are also two cactus-like plants just beside the entrance.
Not much of the interior is shown; all that can be seen is a golden, tiled floor.
Role in episode
For the entirety of the episode, Squidward searches through Bikini Bottom, trying to find a guest to take to the Galleria Diphteria. Eventually, Squidward manages to find someone and, at the grand opening of Galleria Diphteria, it turns out Squidward went with his own reflection.