Hirsch and crew at the Oregon Vortex.
Mystery Tour 2013 was a 4-day road trip led by Alex Hirsch and the crew to find "the weirdest tourist traps in Gravity Falls Oregon and Northern California."
People of Oregon, you've still got a shot!
Hirsch and company left behind several drawings of
Bill Cipher in various spots, such as telephone poles, signs and trash cans, and released photos of them over twitter for fans to find. The fans who took a picture of themselves in the same spots received Mystery Prizes.
As of April 16, 2016, all of the drawings have been found. They are/were located somewhere along the road on the left.
Among the places visited include the
House of Mystery at the Orgeon Vortex, a Masonic Temple,  Trees of Mystery's Paul Bunyan statue which is located along Route 101, the World Famous Grandfather Tree, and One Log House.
Hidden Bill Ciphers
Another photo of the gang at the Oregon Vortex was photographed with a polaroid camera. However, the picture was left at the Oregon Vortex for undisclosed reasons, most likely because the picture was not high quality.
Click here to view this page's gallery.
Hirsch, Alex (March 14, 2013). Tweet number 312241513025380352. “MYSTERY TOUR 2013! My 4-day crew road trip to find the weirdest tourist traps in Oregon officially starts... NOW!”
Hirsch, Alex (March 14, 2013). Tweet number 312270020661104640. “@_AlexHirsch First person to find one of these guys in real life and photograph themselves with it gets a mystery prize!”
Hirsch, Alex (March 18, 2013). Tweet number 313712496475267072. “Somewhere along this road, Pyramids 3,6,7,8 & 9 still haven't been found! Photo one, win a Mystery Prize!”
Hirsch, Alex (March 15, 2013). Tweet number 312740815678107648. “#6”
Hirsch, Alex (March 15, 2013). Tweet number 312668336842493952. ““@egoboystudios: Found it! ” Congrats to DAMIEN for finding the FIRST secret pyramid! Expect your Mystery Prize soon!”
Hirsch, Alex (March 15, 2013). Tweet number 312694974032519169. “@egoboystudios: Mystery Prize #1- A drawing of you as a GF character by amazing show designer Matt Braly! Well done!”
Hirsch, Alex (March 15, 2013). Tweet number 312669841855246336. ““@kimallyn: I FOUND THE SECOND ONE! ” Congrats KIMBERLEE! Your Mystery Prize is coming! Everyone else- keep searching!”
Hirsch, Alex (March 16, 2013). Tweet number 313046628649033729. ““@kimallyn: AHHHHHHH @JasonRitter AND @_AlexHirsch JUST CALLED ME!!!!!! ” Congrats Kimberlee on your Mystery Prize for finding Pyramid #2!”
Hirsch, Alex (March 18, 2013). Tweet number 313726249153486848. ““@ampereHope: hey i found something! http://amperehope.tumblr.com/post/45448060377/so-alex-hirsch-tweeted-something-about-redding-and … ” Congrats! You'll get your Mystery Prize soon!”
Hirsch, Alex (March 15, 2013). Tweet number 312740378975539200. ““@JoeyMSouza: Saw #5...also saw some squirrels fighting. ” Yes! You beautiful people have a Mystery Prize coming!!”
Hirsch, Alex (April 9, 2013). Tweet number 321850388477263872. “@JoeyMSouza You win this round Sousa!”
Hirsch, Alex (April 9, 2013). Tweet number 321851222237790208. ““@pianoplayer1537: I found another... pic.twitter.com/6t4K9AaZI9” Amazing detective work! Your Mystery Prize: I will draw whatever you desire!” ↑
Hirsch, Alex (March 17, 2013). Tweet number 313422462446624768. “#10 will never be found (because it's in our stomachs)”