Photo of the Mighty Microscope
Yesterland Adventure Thru Inner Space
Presented by Monsanto

Free

Prepare to be “miniaturized!”

Photo of the Mighty Microscope Monsanto’s Mighty Microscope attracts a line of anxious guests.

While waiting in line, you see other guests enter one end of the Mighty Microscope, appear near the opposite end only a few inches tall, and finally disappear entirely. Now it’s your turn.

Photos of the Mighty Microscope and snokflake Early in the ride, the Mighty Microscope shrinks you to the size of a snowflake.

Your Atomobile—similar to a Haunted Mansion “Doom Buggy”—takes you on a journey into the world of molecules and atoms.

  • After passing through the Mighty Microscope, you’re shot into giant snowflakes.
  • You continue to shrink, allowing you to enter the crystalline structure.
  • You find yourself in a sea of enormous H2O molecules.
  • Electrons are now spinning around you!
  • You’ve penetrated the wall of an oxygen atom.
  • You face directly into the glowing, red nucleus of the atom.
  • As the snowflake melts, you finally begin getting larger again. You’re back on visual.
  • Eyeball photoLook up! You’re being watched through a microscope.

Your journey ends in the Monsanto display area, featuring the bouncy theme song “Miracles from Molecules” by Robert and Richard Sherman—the team responsible for the music for It’s a Small World.


Adventure Thru Inner Space opened in Disneyland in 1967 as part of the New Tomorrowland project. It occupied the space that previously housed the 20,000 Leagues Under the Sea walk-through and the Monsanto Hall of Chemistry. It closed in 1986. The space is now occupied by Star Tours.


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© 1995-2010 Werner Weiss — Disclaimers, Copyright, and Trademarks

Updated June 17, 2010.

Photo of Adventure Thru Inner Space exterior: 1968 by Roger J. Runck, courtesy of Robin Runck.
Photograph of Adventure Thru Inner Space queue area: 1969 by Werner Weiss.
Photograph of Adventure Thru Inner Space Mighty Microscope: 1972 by Dennis Caswell.
Photograph of Adventure Thru Inner Space snowflake: 1971 by Dennis Caswell, 1971.
Photograph of eye staring into a microscope: 1972 by Dennis Caswell.