There are "Mystery Travelers" to be found on Wii Street U
Toshiaki Suzuki, the Producer & Planner in the Software Development & Design Department at Nintendo took to the Miiverse to announce a challenge of sorts on Wii Street U.
Nintendo has hidden "Mystery Travelers" throughout Wii Street U. We don't know who they are or why they are hiding, but we have a certain set of skills that will allow us to find them.
These skills may or may not be the hints Nintendo gave us and free time to sift through Wii Street U.
#2 is definitely Rio De Janeiro and #3 is the Taj Mahal.
Do these hints mean anything to you? Let me know!