What is up with the hidden Mickeys at Disney?

Answer by  ClJ (23)

It was an inside joke among Imagineers. Management believed characters should stay in the Magic Kingdom but the Imagineers thought differently and started hiding Mickey all throughout Epcot in the 1980s. Because of their popularity, hidden Mickeys are now encouraged and placed in all new constructions.

Answer by  DisneyDiva (18)

They are not flukes, but inside jokes or extra magic for Disney guests. They are quite intentional and designed by the Imagineers. They used to be just three circles in a silhouette of Mickey's head, but can now be quite elaborate and detailed.