The Dimmsdale Museum of Science and Natural History is an educational museum in Dimmsdale that has various exhibits on the solar system and Earth's natural history.
Timmy Turner winds up here naked one day after Cosmo and Wanda wished him away at the Comic Book Store while he was in the bath tub. Going through this museum is apparently a shorter route to home for him, so Timmy ducks behind all the exhibits but ends up getting spotted by Chester, A.J., Sanjay, and Elmer who were there to see the new solar system exhibit. Chester after seeing the exhibit for the first time comments, "Nice moon!".
The building is an American neoclassical style building with columns in the front. Inside it has exhibits on cave men, knights, dinosaurs, various animals. and a newly opened exhibit on the solar system.