Velma sometimes helps give tours. She has no enthusiasm about it because she knows all the ghosts are fake.
One of the activities is a "Mystery Tour" run by Angie.
When Mystery Inc. destroyed the Evil Entity the universe was altered, creating a town that was unaffected by its influence and thus having no need to make a museum for all the strange phenomena and fake monsters terrorizing Crystal Cove.
- Angie Dinkley (museum owner and tour guide of the Crystal Cove Mystery Tour Bus)
- Dale Dinkley (museum owner)
- Lady Marmalade (barista) 
- Velma Dinkley (tour guide) 
- ==List of museum exhibits==
- Captain Cutler
- Charlie the Haunted Robot
- Giggling Green Ghost
- Luna Ghost
- Miner '49er
- Space Kook
- The Broken Spine, a gift shop, bookstore, and coffee bar
Scooby-Doo! Mystery Incorporated
Velma led a tour group there, and ended getting shushed by her parents for being too honest about the fake ghosts.
In the episode The Siren's Song, Fred Jones and Daphne Blake visited the museum after-hours as a date. They mentioned that Flim Flam was in jail for con artistry, and that in regards to Scrappy, they swore never to speak of him again.
The gang went there to get information about aliens.
When the Evil Entity was destroyed, it altered reality for all of Crystal Cove; meaning there was nothing to make profit from. There was no sign above the front door, implying it was just a regular shop.
- Scooby-Doo! Mystery Incorporated
- 101. Beware The Beast From Below
- 111. The Secret Serum
- 116. Where Walks Aphrodite
- 120. The Siren's Song
- 122. Attack Of The Headless Horror
- 123. A Haunting In Crystal Cove
- 201. The Night the Clown Cried
- 213. Wrath of the Krampus
- 216. Aliens Among Us
- 219. The Devouring
- 224. Gates of Gloom
- 226. Come Undone
- All the exhibits were the previous foes which the original incarnation of Mystery Inc. (from Coolsville) had solved in the past.
- When Fred and Daphne went to the musem on a date, Daphne said Flim-Flam was in jail doing 25 to life. As for Scrappy, Fred said that they swore never to speak of him again.